Shenzhen HI-Link Electronic Co.,Ltd User Manual Version: V1.1 Revised date: 2017-1-16 Copr by Hi-link Electronic Co., Ltd. Content 1. Product profile .......................................................................................................................................................... 1 1.1 Overview ........................................................................................................................................................ 1 1.2 Product Characteristics ................................................................................................................................... 1 1.3 Product Packaging .......................................................................................................................................... 1 1.4 Technical Specifications ................................................................................................................................. 2 1.5 Pins introduction ............................................................................................................................................. 2 1.6 Interface definitions ........................................................................................................................................ 4 1.7 Mechanical dimensions .................................................................................................................................. 3 2. Functional Description.............................................................................................................................................. 5 2.1 Wifi indicator flashing description..................................................................................................................5 2.2 Wifi connection status indicator pin................................................................................................................6 2.3 Socket connection status indicator pin............................................................................................................6 2.4 One-Click distribution mode...........................................................................................................................6 2.5 Web distribution function................................................................................................................................7 2.6 Serial to WiFi STA..........................................................................................................................................8 2.7 Serial to WiFi AP ............................................................................................................................................ 8 2.8 Serial port working state conversion .............................................................................................................. 9 2.9 Serial port-network data conversion ............................................................................................................... 9 2.9.1 Module as TCP Server ........................................................................................................................ 9 2.9.2 Module as TCP Client ........................................................................................................................ 10 2.9.3 Module as UDP Server ...................................................................................................................... 10 2.9.4 Module as UDP Client ....................................................................................................................... 11 2.10 Application areas ........................................................................................................................................ 11 3. AT Instructions ........................................................................................................................................................ 11 3.1 Query current module version: at+ver .......................................................................................................... 12 3.2 Local port operation: at+CLport ................................................................................................................... 12 3.3 Set up serial Port:at+uart .............................................................................................................................. 11 3.4 Set up DHCP:at+dhcpc ................................................................................................................................. 11 3.5 Set up wifi connection mode:at+netmode..................................................................................................... 13 3.6 Set up tcp connection mode:at+mode ........................................................................................................... 13 3.7 Set up remote IP when modules work as client:at+remoteip ........................................................................ 13 3.8 Set up remote port when module act as client:at+remoteport ....................................................................... 13 3.9 Set parameter submission: at+net_commit ................................................................................................... 14 3.10 System restart or quit at command mode: at+reconn .................................................................................. 14 3.11 Set the module's ssid and password: at+wifi_conf ...................................................................................... 14 3.12 Set up socket connection Protocol: at+remotepro ...................................................................................... 14 3.13 Set network connection parameters: at+net_ip ........................................................................................... 14 3.14 Query network connection status in STA mode: at+wifi_ConState ............................................................ 15 3.15 Query module MAC address: at+Get_MAC .............................................................................................. 15 3.16 Set up frame length: at+uartpacklen............................................................................................................15 3.17 Set up frame time: at+uartpacktimeout ....................................................................................................... 18 4. AT command control code routine...........................................................................................................................16 4.1 Query configuration information...................................................................................................................16 4.2 Serial to wifi client (static ip address)...........................................................................................................17 4.3 Serial to wifi server (dynamic ip address).....................................................................................................18 4.4 Restore factory settings.................................................................................................................................19 4.5 Configuration software description...............................................................................................................19 5. Upgrade Introduction .............................................................................................................................................. 20 5.1 Introduction of Serial Port Upgrade Method ................................................................................................ 20 5.1.1 Open Serial Port upgrade Software .................................................................................................... 21 5.1.2 Start to upgrade .................................................................................................................................. 21 5.2 Introduction of Network upgrade methods ................................................................................................... 21 5.2.1 Router Connection ............................................................................................................................. 22 5.2.2 Lookup module ip .............................................................................................................................. 22 5.2.3 Program upgrades .............................................................................................................................. 22 6. Restoration of factory setting method ..................................................................................................................... 23 7. Appendix A document revision ............................................................................................................................... 26 1. Product profile 1.1 Overview HLK-RM58S is a new low-cost embedded UART-WIFI module (serial-Wireless network) developed by Shenzhen Hi-Link co., Ltd. This product is an embedded module based on the serial interface in line with the network standard , built-in TCP/IP protocol stack, can realize the user serial port-wireless network (WIFI) conversion. Through the HLK-RM58S module, the traditional serial device can transmit its own data through the Internet network without changing any configuration, which provides a complete and fast solution for the user's serial port device to transmit the data through the network. 1.2 Product Characteristics Compatible IEEE 802.11 a/n Dedicated high-performance 32-bit RISC CPU Support for 5 GHz band Support two working modes of STA/AP Built-in TCP/IP protocol stack Support various AT instructions Support one-click configuration of intelligent networking features Support wireless upgrade (OTA) 5V single power supply, low power consumption Fast transmission speed of serial port 1.3 Product Packaging Figure 1 HLK-RM58S encapsulation size 1 1.4 Technical Specifications Table 1 Product Technical specifications Module Model HLK-RM58S Package Plug-in Wireless standard IEEE 802.11 a/n Frequency range 5150-5250MHz, 5725-5825MHz Wireless parameter Transmitting power Receiving sensitivity 802.11n: +13 +/-2dBm 802.11a: +15 +/-2dBm 802.11n: -73.6dBm 802.11a: -75.0 dBm Antenna form Internal Antenna Hardware interface UART, IIC, PWM, GPIO, SPI Working voltage 5V GPIO drive capability Max:16ma Hardware parameters Working current In normal mode =>
Continuous send=>
Average value: ~100mA, peak value:120mA Average: ~100mA, Peak: 110mA Working temperature
-40~80 Storage environment Temperature: <40, The relative humidity: <90% R.H. Serial transmission Transmission speed 110-921600bps TCP Client 2 Wireless network type STA/AP Software parameters Security mechanism WEP/WPA-PSK/WPA2-PSK Encryption type WEP64/WEP128/TKIP/AES Firmware upgrade Wireless, uart networking protocol IPv4, TCP/UDP User configuration AT+instruction, smart config 1.5 Pins introduction Table 2 Module pin interface 2 Pin Network Name Type Explanation GND Ground Ground GPIO0 I/O ES0 pin, pull down 1 second, serial 0 into AT command mode ;Pull down 8 seconds, restore factory default parameter settings UART_RXD1 UART_TXD1 Serial port 1 receiving Serial port 1 sending 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC I O P P NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC 3 VCC_5V External power supply pin 1: 5V @ 500mA GND GND Ground VDD_3V3 External power supply foot 2: 3.3V @ 500mA External power pin: 3.3V @ 200mA SYS_RST_N Module reset, low level effective, reset time 500ms 27 28 29 30 31 32 33 34 35 36 37 38 NC NC NC NC NC NC GPIO33 ANT GND NC NC NC NC NC NC I O I I/O I/O UART_TXD0 UART_RXD0 Serial 0 output Serial 0 input Wifi indicator light optional, default unavailable Ground Ground 1.6 Interface definitions Figure 2 Module interface definition 4 1.7 Mechanical dimensions Unit: mm (mm) Figure 3 Module detail dimensions 2. Functional Description HLK-RM58S supports serial port to WIFI STA, serial to WIFI AP mode. 2.1 WiFi indicator flashing description The module is flashed by the LED indicator in different modes, so that the module running status can be quickly and easily known. The WiFi indicator of the module mainly has the following status:
(1) The wifi indicator flashes twice periodically: indicates that the module is in the one-click distribution mode.
(2) The wifi indicator flashes thirdly periodically: indicates that the module is in the sta mode and the target ap hotspot is not connected.
(3) The wifi indicator flashes periodically: indicates that the module is in the 5.8g ap mode, but it does not indicate whether there is a sta client device connected.
(4) The wifi indicator flashes quickly: indicates that the module is in the sta mode and is connected to the wifi hotspot. When there is data transmission, the module LED will flash quickly. 5 2.2 Wifi connection status indicator pin GPIO58 pin is used as the indicator pin of the modules wifi connection status in sta mode. When the module's wifi is connected to the router, GPIO58 will output a high level, otherwise will output low level, and other modes will output low level. 2.3 Socket connection status indicator pin The GPIO59 pin is used as the indicator pin of the module socket's connection status. When the socket connection is successful, the GPIO outputs a high level, otherwise outputs low level. 2.4 One-click distribution mode For the IOT wifi module, based on cost and performance considerations, there is no touch screen interactive interface like a mobile phone. Users can see the ap list on the mobile phone and click the password to connect to the network. What should I do? One-click configuration is the wifi module in promiscuous mode (can capture all 802.11 frames in the air), APP sends the SSID and password to the wifi module through UDP broadcast or multicast through certain encoding rules, the module parses out, and then connects to the router. Install the Android app HLK-TCPdemo, then select Configure Networking, select the elian mode, then select V5, input the password, click to open the configuration and start the configuration. When the distribution network is successful, the module will change from double flash to quick flash, indicating network successful connected. Figure 4 One-click distribution network 6 When the module is on the one-click distribution, you need to set the module to the one-click distribution mode. Serial configuration tool can be used to set the module to the one-click distribution mode. Figure 5 Set to one-click distribution mode 2.5 Web distribution function When the module is in ap mode, input 192.168.16.254 in the browser, and then input the account and password admin, later enter the web page setting interface. Figure 6 Module web page setting interface When the module is in the sta mode, input the module's ip in the browser to access to the module's web page setup function. 7 2.6 Serial to WIFI STA Figure 7 Module as STA The module converts the serial port data into wifi data to achieve the purpose of networking. 2.7 Serial to WIFI AP In AP mode, mobile phone, PC or other wifi devices can be connected to RM58S module through wifi, and serial port devices can transmit data through RM58S module and other wifi devices. Figure 8 Module work as ap 8 2.8 Serial port working state conversion After the HLK-RM58S is powered on, the default mode is transmission mode. By pulling down the pin ES0 (GPIO0) to enter at instruction mode longer than 50ms, the module will process the received data as at instructions, send at instructions to let the module into transparent mode, After the network connection, the data received by the serial port will be transmitted as transparent data. Power on Transparent mode AT mode Send at command Pull down es0 pin Figure 9 Serial port mode conversion 2.9 Serial port-network data conversion 2.9.1 Module as TCP Server TCP Server TCP Client TCP Client TCP Client Figure 10 TCP Server In this mode, the module listens to the specified port, waits for TCP Client connection, and after the connection, all TCP data is directly sent to the serial port end, and the data of the serial port end is sent to all TCP Client ends. When the module is used as the TCP server, the most supporting two TCP clients are connected to the TCP server. 9 2.9.2 Module as TCP Client TCP Client TCP Server Figure 11 TCP Client In this mode, the module will actively connect to the specified IP, port, all the data sent from the TCP Server end is sent directly to the serial port, and the data from the serial port to the TCP Server side. Abnormal network disconnection can result in active re-connection of the module. 2.9.3 Module as UDP Server UDP Server UDP Client Figure 12. UDP Server In this mode, the module opens the local designated port, once it receives the data sent to the port, the module sends the data to the serial port and records the remote ip, port. The module only records the remote information on the last connection, and the data sent by the serial port is sent directly to the recorded remote ip, port. 10 2.9.4 Module as UDP Client UDP Server UDP Client Figure 13. UDP Client In this mode, the module sends the serial port data directly to the specified ip, port, and the data returned from the server will be sent to the serial port. 2.10 Application areas Instruments and instruments;
Smart home;
Wi-Fi remote monitoring / control;
Toy field;
Color LED control;
Fire protection, security intelligent integrated management;
Smart card terminals, wireless POS machines, handheld devices and so on. 3. AT Instructions Instruction format: in AT instruction mode, the system can be configured through the AT instructions of the serial port. The command format is as follows:
at+[command]=[value],[value],[value]...... All commands begin with "at" and "\ r" end. If the command is not encapsulated in this format, it will not be processed and will return a different return value depending on the command module. For example:at+ver=?
Module will return: HLK-RM58S (V1.00 (Nov 30 2017) Query instruction format: at+[command]=?
11 3.1 Query current module version: at+ver Grammatical rules:
Command type Grammar Return and description EO at+ver=?
at+ver=HLK-RM58S(V1.00(Nov 30 2017)): current version 3.2 Local port operation: at+CLport Command type Grammar EO at+CLport=8080 at+CLport=?
Return and description at+CLport=8080 Ok Description: set the local port to port 8080 at+CLport=?
8080 Description: Query local port 3.3 Set up serial Port: at+uart Command Type Grammar Return and description EO at+uart=115200,8,n,1 Query Command at+uart=?
3.4 Set up DHCP: at+dhcpc Command Type Grammar EO at+dhcpc=1 Query Command at+dhcpc=?
at+uart=115200,8,n,1 Ok Description: Set up serial Port parameters at+uart=?
115200,8,n,1 Descriptionquery serial port parameters Return and description at+dhcpc=1 ok at+dhcpc=?
1 Description: 1: dhcp mode, 0: static ip 12 3.5 Set up wifi connection mode: at+netmode Command Type Grammar EO at+netmode=3 Query Command at+netmode=?
Command Type Grammar EO at+mode=client Query Command at+mode=?
3.6 Set up tcp connection mode: at+mode Return and description at+netmode=3 Ok Description: set the module to ap mode at+netmode=?
3 Description: 1: One-click distribution network 2: sta mode, 3: 5.8G ap mode Return and description at+mode=client Ok Description: set the module to client mode at+mode=?
client Description: client: server:
Return and description at+remoteip=192.168.11.102 ok Description: set the remote ip of the mode at+remoteip=?
192.168.11.102 Description: query remote ip 3.7 Set up remote IP when modules work as client: at+remoteip Command Type Grammar EO at+remoteip=192.168.11.102 Query Command at+remoteip=?
3.8 Set up remote port when module act as client: at+remoteport Command Type Grammar EO at+remoteport=1234 Query Command at+remoteport=?
1234 Return and description at+remoteport=1234 ok Description: set the remote port of the mode at+remoteport=?
Descriptionquery remote port 13 3.9 Set parameter submission: at+net_commit Command Type Grammar EO at+net_commit=1 Return and description at+net_commit=1 Ok Description: submit setup parameters 3.10 System restart: at+reconn Command Type Grammar at+reconn=1 at+net_commit=1 at+reconn=1 Return and description at+reconn=1 Description: Quit at command mode at+net_commit=1 ok at+reconn=1 ok Description: System restart 3.11 Set the module's ssid and password: at+wifi_conf Command Type Grammar at+wifi_conf=HI-LINK_5FE8,n one,12345678 Return and description at+wifi_conf=HI-LINK_5FE8,none,12345678 ok Description: set the ssid and password of the module at+wifi_conf=?
Query Command at+wifi_conf=?
HI-LINK_5FE8,none,12345678 Description: Query the ssid and password of the module 3.12 Set up socket connection Protocol: at+remotepro Command Type Grammar EO at+remotepro=tcp Query Command at+remotepro=?
tcp Return and description at+remotepro=tcp ok Description: set the module socket protocol to tcp at+remotepro=?
Description: query module socket connection protocol 3.13 Set network connection parameters: at+net_ip Command Type Grammar at+net_ip=192.168.16.254,255. 255.255.0,192.168.16.254 Return and description at+net_ip=192.168.16.254,255.255.255.0,192.168.16.254 ok Description: set the ip, gateway, dns of the module at+net_ip=?
Query Command at+net_ip=?
192.168.16.254,255.255.255.0,192.168.16.254 Description: query module ip, gateway, dns EO EO EO EO 14 3.14 Query network connection status in STA mode: at+wifi_ConState Command Type Grammar Return and description Query Command at+wifi_ConState=?
at+wifi_ConState=?
Disconnected Description: in sta mode, the module wifi is not connected, and the Connected indicates that the network is connected 3.15 Query module MAC address: at+Get_MAC Command Type Grammar Return and description Query Command at+Get_MAC=?
40:D6:3C:15:5F:E8 at+Get_MAC=?
40:D6:3C:15:5F:E8 Description: query module mac address 3.16 Set up frame length: at+uartpacklen Command Type Grammar EO at+uartpacklen=64 Query Command at+uartpacklen=?
64 Return and description at+uartpacklen=64 ok Description: Set the modules frame length to 64 bytes. at+uartpacklen=?
Description: Query modules frame length as 64 bytes. 3.17 Set up frame time: at+uartpacktimeout Command Type Grammar EO at+uartpacktimeout=200 Query Command at+uartpacktimeout=?
200 Return and description at+uartpacktimeout=200 ok Description: Set the modules frame time is 200ms at+uartpacktimeout=?
Description: Query the modules frame time as 200ms 15 4. AT command control code routine 4.1 Query configuration information Code:
char *query="\\ // Defining a string pointer at+netmode=?\r\n\ // Query WiFi connection mode at+wifi_conf=?\r\n\ // Query the SSID and password of the module at+dhcpc=?\r\n\ // Query dhcp at+net_ip=?\r\n\ // Query module ip at+remoteip=?\r\n\ // Query remote ip at+remoteport=?\r\n\ // Query the port at+remotepro=?\r\n\ // Query socket connection protocol at+mode=?\r\n\ // Query tcp connection mode at+uart=?\r\n\ // Query the serial port parameter at+uartpacklen=?\r\n\ // Query serial port frame length at+uartpacktimeout=?\r\n\ // Query serial port frame time at+ver=?\r\n\ // Query firmware version number
Com_send(query); // Send these data out of the serial port Run back:
at+wifi_conf=? Hi-Link,wpa2_aes,12345678 at+dhcpd=? 0 at+netmode=? 0 at+dhcpc=? 1 at+net_ip=? 192.168.15.254,255.255.254.0,192.168.11.1 at+remoteip=? 192.168.11.245 at+remoteport=? 8080 at+remotepro=? tcp at+mode=? server at+uart=? 115200,8,n,1 at+uartpacklen=? 64 at+uartpacktimeout=? 10 at+ver=? V1.39(Dec 6 2012) 16 4.2 Serial to Wifi client (static ip address) Code:
char *commands_wifi_client_static="\\
at+netmode=2\r\n\ //Set to wireless network card sta mode at+wifi_conf=HI-LINK,wpa2_aes,12345678\r\n\ //Set wifi, encryption and password at+dhcpc=0\r\n\ //Use static ip mode at+net_ip=192.168.11.254,255.255.255.0,192.168.11.1\r\n\ // Set mode ip at+remoteip=192.168.11.245\r\n\ // Set the remote ip to be connected at+remoteport=8080\r\n\ // Set the remote port to be connected at+remotepro=tcp\r\n\ // Set sockets connection methods at+mode=client\r\n\ //Use client mode to connect to the remote server at+uart=115200,8,n,1\r\n\ // Set the serial port parameter at+uartpacklen=64\r\n\ // Set the frame length at+uartpacktimeout=10\r\n\ // Set the frame time at+net_commit=1\r\n\ // Submit parameters at+reconn=1\r\n\"; // Restart the module Com_send(commands_wifi_client_static); //Send parameters out of the serial port Run back:
at+netmode=2 ok at+wifi_conf=HI-LINK,wpa2_aes,12345678 ok at+dhcpc=1 ok at+remoteip=192.168.11.245 ok at+remoteport=8080 ok at+remotepro=tcp at+mode=server at+uart=115200,8,n,1 ok at+uartpacklen=64 ok at+uartpacktimeout=10 ok at+net_commit=1 17 4.3 Serial to wifi server(dynamic ip address) Code:
char *commands_wifi_ap="\
at+netmode=2\r\n\ // Set to wireless network card mode at+wifi_conf=Hi-Link_,wpa2_aes,0000000000\r\n\ // Set the hotspot name and password for the wifi connection at+dhcpc=1\r\n\ // Use dynamic way to get ip at+remoteport=8080\r\n\ // Set the local monitor port at+remotepro=tcp\r\n\ // Set sockets connection methods at+mode=server\r\n\ // Socket as a server to connect at+uart=115200,8,n,1\r\n\ // Set serial port parameters at+uartpacklen=64\r\n\ // Set the frame length at+uartpacktimeout=10\r\n\ // Set the frame time at+net_commit=1\r\n\ // Submit parameters at+reconn=1\r\n\"; // Restart the module Com_send(commands_wifi_ap);
Run back:
at+netmode=2 ok at+wifi_conf=HI-LINK,wpa2_aes,12345678 ok at+dhcpc=1 at+remoteip=192.168.11.245 ok at+remoteport=8080 ok at+remotepro=tcp at+mode=server at+uart=115200,8,n,1 ok at+uartpacklen=64 ok at+uartpacktimeout=10 ok at+net_commit=1 18 4.4. Restore factory settings Code:
char *commands_device_default="\\
at+default=1\r\n\ //Reset Com_send(commands_device_default);
Run back:
at+default=1 After 30s, the module starts normally and all configuration parameters are factory configured. More functions are configured with the serial port software, and the serial port on the left side of the software automatically generates the corresponding setting command. 4.5 Configuration Software Description Figure 14. Serial port configuration interface 1: command window to be sent 2: serial port number selection 19 3: mode selection 4: wifi name and password 5: network protocol selection 6: serial port parameters 7: commit configuration 8: query configuration 9: enter transparent mode 10: restore factory setting 11: serial return command 5. Upgrade Introduction The upgrade of HLK-RM58S module can be carried out through serial port or network, and the appropriate upgrade method can be selected according to the field environment. 5.1 Introduction of Serial Port Upgrade Method In the upgrade folder there is a img file, upgrade software mainly read the files inside to upgrade; There are three files in the img folder, where HLK-RM58S.img and HLK-RM58S (b.1.00.1 20180611182552). Img file contents are the same, only file names are different, HLK-RM58S
(b.1.00.120180611182552). Txt records the default parameter for this firmware; HLK-RM58S
(b.1.00.120180611182) 552) "is the firmware version number, when the module runs this firmware query version number and this version number the same, each firmware has a unique version number, automatically generated by the compilation system; When there is a new firmware to upgrade, the three files can be overwritten. Figure 15. Upgrade file list 20 5.1.1 Open Serial Port upgrade Software Open serial port upgrade software HLK-RM58S_uart.exe, input lowercase string c, select serial port number, select the corresponding baud rate through digital key 1 / 2 / 3 / 4 Figure 16. Serial upgrade interface 5.1.2 Start to upgrade Enter the space bar, press and hold the ES0 (GPIO0) and RST (SYS_RST_N) buttons at the same time, then release the button RST,0.5s then release the button ES0, computer side software will automatically upgrade the module. Figure 17. Serial port is upgrading 5.2 Introduction of Network upgrade methods In order to realize the network upgrade of the module, it is necessary to connect the line module through wifi, and then to upgrade the data transmission according to the ip of the module. 21 5.2.1 Router Connection tools, or ap mode can be used. 5.2.2 Lookup module ip Modules that need to be upgraded can be configured and connected to routers through serial port configuration Because you need to input the ip, of the module when upgrading, you can go to the router to find the corresponding ip, of the module or use HLK-RM58S_Discover to search the corresponding ip. for the module in the local area network. Figure 18. Lookup module ip 5.2.3 Program upgrades Enter the module's ip address on the software HLK-RM58S_wifi.exe, and then enter:
Figure 19. Open upgrade interface 22 Appears as shown in the figure to indicate that the upgrade is in progress Figure 20. Upgrade in progress Appears as Update finish!, indicates upgraded successfully. Figure 21. Upgrade completed
(If your computer turns on a dual network card, you may not be able to upgrade and you will need to shut down a network card, if it is generated by the installation virtual machine.) 6. Restoration of factory setting method Press the ES0 button on the base plate for 6 seconds to restore the factory setting. 23 Version No. Revised scope Date V1.21 V1.22 V1.23 V1.25 V1.26 Power supply changed from 3.3v to 5v Add upgrade function description Add the instruction of the at command netmode, update the picture of the serial port configuration tool Add wifi, socket indicated pin description Add one-click distribution description, web set description Add AT command sample code Add demo code description Integration instructions for host product manufacturers according to KDB 996369 D03 OEM Manual v01 2.2 List of applicable FCC rules FCC Part 15.407 2.3 RF exposure considerations This equipment complies with the FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and any part of your body. 2.4 Antennas Antenna Specification are as follows:
Type: Internal Antenna Gain: 5.2G WiFi: 3.0 dBi, 5.8G WiFi: 2.0 dBi 2.5 Label and compliance information Remind end customers to add "Contain FCC ID: 2AVZEMRMCRUS20PT-01". 24 FCC Warning This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Information that must be placed in the end user manual:
The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user's manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual. OEM integration instructions:
This device is intended only for OEM integrators under the following conditions:
The transmitter module may not be co-located with any other transmitter or antenna. The module shall be only used with the external antenna(s) that has been originally tested and certified with this module. As long as the conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). 25