CJM210EC/CJM210ECI 802.11 b/g/n High Performance Embedded WiFi Module User Guide Ver. 1.1 Revision 1.0 1.1 Revision History Date October 2015 November 2015 Description Initial release Add FCC warning statement 2 1. General Description The CJM210EC/CJM210ECI WiFi module provides quick, easy and cost effective way to enable WiFi connectivity for all kinds of products. The module is based on single chip Atheros AR9341 which is a highly integrated IEEE 802.11n 2.4 GHz SoC. The CJM210EC/CJM210ECI supports radio data rate up to 150 Mbps. Besides, the module is integrated with 8MB flash and 32 MB DDR1 RAM and support rich I/O interfaces for variety of applications. 2. Hardware Features 2.1 Module SKUs Model Name CJM210EC CJM210ECI 2.2 Hardware Specification RF characteristics Standard Operating Frequency Supported Data Rates Antenna Option 1 MMCX port / Chip antenna 1 IPEX port / Chip antenna IEEE 802.11 b/g/n 1x1 2.412 GHz ~ 2.484 GHz Radio 802.11 b/g/n 1T1R 802.11 b/g/n 1T1R 802.11n: 6.5Mbps ~ 75Mbps (CJM210EC) 6.5Mbps ~ 144.4Mbps (CJM220E) 802.11g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps 802.11b: 1, 2, 5.5, 11 Mbps 802.11b: 18dBm 802.11g: 18dBm@6Mbps, 13dBm@54Mbps 802.11n: 17dBm@MCS0, 12dBm@MCS7 802.11b: -93dBm 802.11g: -90dBm@6Mbps, -75dBm@54Mbps 802.11n: -90dBm@MCS0, -71dBm@MCS7 On-board chip antenna or MMCX/IPEX connector for external antenna Qualcomm Atheros AR9341 SoC, MIPS74Kc processor up to 533 MHz Flash: 8 MB nor flash, RAM: 32 MB DDR1 Low speed UART x 1: up to 115.2 Kbps 3 Transmit Power (Typical) (2 dBm) Receiver Sensitivity Antenna Options Hardware Characteristics Chipset Memory I/O Interfaces High speed UART x 1: up to 3Mbps with RTS/CTS flow control Ethernet x 2, I2C x 1, USB x 1, GPIOs
-40 ~ 70
-40 ~ 85 3.3 V DC 47(l) mm x 33(w) mm x 8(h) mm Operating Temperature Storage Temperature Power source Dimension 2.3 Block Diagram 4 2.4 Embedded System Design The modules support two integrated methods for embedded system, and user can depend on their product design to integrate with the WiFi module:
Integrate with peripheral or sensor devices. Connect to another MCU 2.5 Module Dimensions Unit: mm 5 2.6 Pinout and Signal Description L A N _ R X
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I P N 1 L A N _ R X
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P N 1 I U S B _ D
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P N 1 I U S B _ D
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I P N 1 G N D P N 2 I U A R T 1 _ T D P N 2 U A R T 1 _ R D P N 2 I I U A R T 1 _ R T P N 2 I U A R T 1 _ C T P N 2 I V D D 3 3 _ N P N 2 I I G N D P N 2 I F A C T O R Y _ R E S E P N 2 I W L A N _ L E D P N 3 I U S B _ L E D P N 2 I W P S P N 2 I LAN_TX+
LAN_TX-
VDD20_OU WAN_RX WAN_RX-
WAN_TX+
WAN_T GND UART0_IN UART0_OU SYS_RESE GND GND GND GND PIN1 PIN1 PIN1 PIN1 PIN1 PIN1 PIN9 PIN8 PIN7 PIN6 PIN5 PIN4 PIN3 PIN2 PIN1 PIN3 PIN3 PIN3 PIN3 PIN3 PIN3 PIN3 PIN3 PIN3 PIN4 PIN4 PIN4 PIN4 PIN4 PIN4 WPS_LED WAN_LED GPIO16 GPIO17 GPIO18 GPIO19 GPIO20 GPIO21 GPIO22 VDD33_IN VDD33_IN GND GND GND GND MMCX CON MMCX CON ANT
(option) TOP VIEW 6 Pins Description Pins 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Name GND GND GND GND SYS_RESET UART0_OUT UART0_IN GND WAN_TX-
WAN_TX+
WAN_RX-
WAN_RX+
VDD20_OUT LAN_TX-
LAN_TX+
LAN_RX-
LAN_RX+
USB_D+
USB_D-
Description Ground Ground Ground Ground Hardware reset Low speed UART serial out Low speed UART serial in Ground Ethernet0 Tx-
Ethernet0 Tx+
Ethernet0 Rx-
Ethernet0 Rx+
2.0 V supply out Ethernet1 Tx-
Ethernet1 Tx+
Ethernet1 Rx-
Ethernet1 Rx+
USB D+ signal; carries USB data to and from the USB2.0 PHY USB D- signal; carries USB data to and from the USB2.0 PHY Ground High speed UART transmit data High speed UART receive data High speed UART request to send High speed UART clear to send Ground 3.3 V supply input GND UART1_TD UART1_RD UART1_RTS UART1_CTS GND VDD33_IN FACTORY_RESET Restore system configuration to facroty default value WPS WPS(WiFi Proected Setup) function USB_LED USB LED 19 20 21 22 23 24 25 26 27 28 29 Note Can be configured as GPIO function. Can be programmed to be GPIO function. Can be programmed to be GPIO function. Open drain Can be programmed to be GPIO function. Can be programmed to be GPIO function. 7 30 31 32 WLAN_LED WLAN LED WPS_LED WPS LED WAN_LED Ethernet0 LED Can be programmed to be GPIO function. Can be programmed to be GPIO function. Can be programmed to be GPIO function. Open drain Open drain GPIO16 GPIO17 GPIO18 GPIO19 GPIO20 GPIO21 GPIO22 VDD33_IN VDD33_IN GND GND GND GND GPIO pin GPIO pin GPIO pin GPIO pin GPIO pin GPIO pin GPIO pin 3.3 V supply input 3.3 V supply input Ground Ground Ground Ground 33 34 35 36 37 38 39 40 41 42 43 44 45 NOTE: The I2C interface can be supported by programming GPIO control and multiplexing. GPIO Electrical Characteristics Symbol Parameter VIH VIL VOH VOL IIL IOH VIH VIL VOH VOL IIL High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage Low Level Input Current High Level Output Current High Level Input Voltage (GPIO11, GPIO16, GPIO17) Low Level Input Voltage (GPIO11, GPIO16, GPIO17) High Level Output Voltage (GPIO11,GPIO16, GPIO17) Low Level Output Voltage (GPIO11, GPIO16, GPIO17) Low Level Input Current (GPIO11, GPIO16, GPIO17) Min. Max. 2.8 1.8
-0.3 0.3 2.8 2.2 0.4 0
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15 8
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3.6 2.4
-0.3 0.3 3.6 2.4 0
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7
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Unit V V V V A mA V V V V A 2.7 Manufacturing Process Recommendations The second wave soldering process depends on external factors like the choices of baseboard, soldering paste, size and thickness, etc. Exceeding the recommended 8 soldering temperature and time in this profile may damage the module permanently. 3. Evaluation Board The CJM200-EVK evaluation board is used to evaluate the module functions and for the hardware reference design to integrate the module. 9 10/100 Mbps fast Ethernet CJM210EC/CJM220E WiFi module Where:
1 2 3 4 5 6 7 8 9 NOTE: You have to press Factory default push button over 5 seconds to revert to factory default DC power connector (5V DC) Battery power connector (3.3V) Power source switch High speed UART High speed RS232 High speed UART/RS232 switch Low speed UART Low speed RS232 Low speed UART/RS232 switch 10 USB 2.0 for mass storage 11 12 13 GPIOs Header 14 15 16 WPS push button 17 Reset push button Factory default push button*
LEDs settings and reboot, otherwise it will act as Reset push button. 10 3.1 Switch Configuration 3.1.1 Power source switch The power source switch is used to decide the power source supply is from DC or battery by jumper. The battery power only supplies to WiFi module, and the DC power supplies to the whole board. 3.1.2 UART/RS232 switch Both high speed and low speed UART/RS232 switches are to enable UART or RS232 interface. If the jumper is used to connect switch header, the RS232 is enabled, otherwise the UART is enabled. 3.2 COM port configuration The reference board supports two COM ports. The low speed UART/RS232 is used for console, and the high speed UART/RS232 is used for data transfer to WiFi or Ethernet. Please notice that the RS232 connection cable is not null modem. 3.2.1 Low speed UART/RS232 The settings:
8 data bits, 1 stop bit, 0 parity bit No flow control 3.2.2 High speed UART/RS232 The settings:
8 data bits, 1 stop bit, 0 parity bit RTS/CTS flow control, and is configurable to enable or disable. The definition of UART pin header is:
VCC Rx Tx GND The default speed is 115200 bits per second, and is configurable up to 3 Mbps. The definition of UART pin header is:
Speed 115200 bits per second CTS VCC GND Tx Rx RTS 11 4. Navigating the Web Interface You can connect to the device by Ethernet port or by WiFi. The default WiFi is enabled as AP mode, and the SSID is CJN-WiFi without security. 4.1 Logging into the Web Interface You can log into the Web interface using a computer via a standard Web browser. 1. On the PC, open a Web browser window. 2. In the address or location bar, type the IP address of the AP. The default IP address is 192.168.1.1. 3. Press <Enter> to connect to the Web interface. 4. If a Windows security alert dialog box appears, please enter the correct user name and password and click OK/Yes to proceed. The default use name is Admin and no password. The wireless AP Web interface appears. The Wireless APs Web browser-based interface provides intuitive controls for viewing the status, making configuration changes, network administration and troubleshooting. The Web interface features that are identified as below. 12 Element Menu Current Operation Mode Workspace Description Under each category (System Status, System Configuration, Management) are options that, when clicked, open the related workspace in the area to the right. Showing the current system operation mode. The options displayed in Menu bar are related to the current operation mode. This large area displays features, options and indicators relevant to the menu bar choices. 13 4.2 Viewing the Device Status 4.2.1 System Summary The System Status --> System Summary page displays the main information on the APs settings. The System Information section displays a general overview of the APs current status, including Device Name, MAC address, current time, current firmware version, etc. The IP Settings section displays the information on the APs network settings, including current APs IP address, subnet mask, gateway, and the method of obtaining the IP address (DHCP or fixed IP). The Current Wireless Settings displays the common wireless settings that the AP is using, including operation mode, wireless mode (802.11 b/g/n, HT20), frequency/channel, SSID, and security etc. The Serial to Network Settings displays the current settings for COM port and network port, including UART speed, flow control, TCP or UDP network mode and port number. You can click the refresh button to refresh the information immediately. 4.2.2 Wireless Station List 14 This option will be showed in Status group of menu bar when the operation mode is configured to be Access Point mode. The System Status --> Wireless Station List page is to help you monitor wireless clients that are associated with your wireless network. The information displays each associated clients MAC address and signal strength. You can click the refresh button to refresh the status of client list or it will refresh automatically per 30 seconds. 4.2.3 Connection Status This option will be showed in Status group of menu bar when the operation mode is configured to be Wireless Client mode. The System Status --> Connection Status page is to view the connection status while the system is connecting to the wireless network. The status information includes APs SSID and BSSID, current channel, connection status, wireless mode, security, Tx Data rate, current noise level and signal strength, etc. You can click the refresh button to refresh the connection status or it will refresh automatically per 30 seconds. 15 4.3 Configuring the Device Settings 4.3.1 System Properties To configure the system settings:
1. Go to System Configuration--> System Properties. The System Setting page appears. 2. In Device Name, type a new name for the device or leave as is to accept the default device name. The device name identifies the AP among other devices on the network. In Country/Region, select a country code to conform to local regulations. The usable channel list that shows in wireless network page is depended on the selected country code. In Operation Mode, select one of supported operation mode (Access Point, Wireless Client, and Repeater). 3. 4. 5. Click Apply button to take effect the new settings, or Cancel button to revert to the original settings. 16 4.3.2 IP Settings By default, the device is configured to assign the static IP address 192.168.1.1. You can change the IP address by specifying the other static IP address for your network deployment or obtaining an IP address from DHCP server on network. To review and configure the IP Settings 1. Go to System Configuration--> IP Settings. The IP Settings page appears. 2. Verify that the IP Network Setting is to obtain the IP address from DHCP server or set to static IP address. 3. When the Specify and IP address is selected, you can change the following settings IP Address: Assign an IP address for the device. IP Subnet Mask: Specify the subnet mask for your network segment deployment. Default Gateway: This is the gateway IP address of the internet interface. Primary DNS: The IP address of the primary Domain Name System (DNS) server. Secondary DNS: The IP address of te secondary Domain Name System (DNS) server. 4. Click Apply button to take effect the new settings, or Cancel button to revert to the original settings. 17 4.3.3 Configuring the Wireless Basic Settings The device supports 3 wireless operation modes: Access Point, Wireless Client and Repeater. Different operation mode will have different wireless settings for configuration. The operation mode is configured in System Configuration--> System Properties page. Go to System Configuration-- > Wireless Network. The Wireless Network page appears. Access Point Mode The basic wireless settings used for Access Point mode are listed below. Setting SSID Description This is the name of your wireless network. The name can be up to 32 characters in length, and contain letters and numbers. This option controls whether or not the SSID is visible to anyone looking for wireless networks. Support 802.11 g/n HT20 and 802.11 b/g modes. Select the channel used by the wireless network. You can choose Auto or choose one of a specific number of channels. If you choose Auto, the AP automatically selects the best channel that is the least interference. If you enable this option, all the associated clients wont be able to communicate with each other. 18 Suppressed SSID Wireless Mode Channel/Frequency Station Separation Wireless Client Mode The basic wireless settings used for Wireless Client mode are listed below. Setting Wireless Mode Description Support 802.11 g/n HT20 and 802.11 b/g modes. You can specify the Access Point SSID directly, or use site survey feature to select the specified Access Point. This setting is to let the wireless client always connect to the Access Point with specific MAC address, and wont roam to other Access Point with the same SSID. SSID Prefer BSSID Repeater Mode The repeater mode is AP mode + client mode. After the client side connecting to remote AP is successful, the AP side will act as the remote AP to extend the wireless range. Wireless Security Settings:
In the security mode option, there are WEP, WPA-PSK, WPA2-PSK, WPA-PSK Mixed, WPA, WPA2 and WPA Mixed listed. CAUTION: Setting the security mode to WEP or setting the WPA algorithm to TKIP will result in 19 decreased performance, as these settings are not supported by the 802.11n standard. 20 Access Point Mode WEP Setting Security mode Auth. Type Input Type Key Length Default Key Key1/Key2/Key3/Key4 Description Enable WEP encryption Open System: No security measure is enforced. Shared: The selected Default Shared Key is used. Hex: The encryption key only accepts hexadecimal characters. ASCII: The encryption key accepts ASCII characters. Specify the key length with 64/126/152 bit Select the key index that WEP key is used Enter the key according to Input Type and Key Length settings. 21 WPA-PSK/WPA2-PSK/WPA-PSK Mixed Setting Security mode Encryption Passphrase Group Key Update Interval Description The security uses the entered pre-shared key to produce a security key between AP and client. WPA2 is the strongest security and is supported in 802.11n standard. WPA provides stronger security than WEP, but less than WPA2. The WPA is greater compatibility than WPA2. WPA-PSK Mixed allows clients to use WPA-PSK or WPA2-PSK based on the clients capabilities. AES offers the strongest encryption, and is the only option supported by the 802.11n standard. TKIP will result in decreased performance but is for compatibility. Auto is automatically selects AES or TKIP based on clients capabilities. Enter a new passphrase between 8 and 32 characters long, using any combination of printable characters. Group key is used for multicast packets, and this setting is used to update new group key periodically with associated clients. The value should be between 30 to 3600 seconds, and 0 is to disable the update. 22 WPA/WPA2/WPA Mixed Setting Security mode Encryption Radius Server Radius Port Radius Secret Group Key Update Interval Description The security uses EAP (Extensible Authentication Protocol) IEEE 802.1x authentication method to get a security key from Radius server. This method is commonly used in Enterprise networks. WPA2 is the strongest security and is supported in 802.11n standard. WPA provides stronger security than WEP, but less than WPA2. The WPA is greater compatibility than WPA2. WPA Mixed allows clients to use WPA or WPA2 based on the clients capabilities. AES offers the strongest encryption, and is the only option supported by the 802.11n standard. TKIP will result in decreased performance but is for compatibility. Auto is automatically selects AES or TKIP based on clients capabilities. Radius server IP address Radius server port number. The default port number is 1812 Enter the radius secret key that is specified in radius server. Group key is used for multicast packets, and this setting is used to update new group key periodically with associated clients. The value should be between 30 to 3600 seconds, and 0 is to disable the update. 23 Wireless Client Mode In wireless client mode, the wireless security settings are depended on the connecting Access Points security settings. The WEP security settings are the same as in Access Point mode, and other security modes are described as below. WPA-PSK/WPA2-PSK Setting Security Mode Encryption PassPhrase WPA/WPA2 Setting Security Mode Encryption Description Select WPA-PSK or WPA2-PSK according to connecting APs security mode setting Select TKIP or AES depending on connecting APs settings. TKIP will decrease the performance, so only if APs encryption setting is TKIP, otherwise it is not recommended. Enter the passphrase key the same as APs setting. Description Select WPA or WPA2 according to connecting APs security mode setting Select TKIP or AES depending on connecting APs settings. TKIP will decrease the performance, so only if APs encryption setting is TKIP, otherwise it is not recommended. 24 EAP Method EAP Authentication Authentication Identity Authentication Password 4.3.4 Wireless MAC Filter Select PEAP or TTLS depending on Radius servers settings. MS-CHAP/MS-CHAP2 Identification credential used for EAP authentication Password credential used for EAP authentication The Wireless MAC Filter is used to control access to the wireless network by clients MAC address. You can restrict the access permission by allowing or denying only stations explicitly listed in the access control table. This function is only supported in Access Point operation mode. 1. Go to System Configuration > Wireless MAC Filter. The Wireless MAC Filer page 2. appears. In ACL Mode, you can decide the wireless access control policy by select the Deny MAC in the list, or Allow MAC in the list. The default is disabled. 3. You can specify the MAC address manually and press Add button to new add the MAC address to the MAC address table. 4. Click Apply button to take effect the new settings. 25 4.3.5 Wireless Advanced Settings The wireless advanced settings are common to any operation mode. 1. Go to System Configuration--> Wireless Advanced Settings. The Wireless Advanced Settings page appears. 2. After finishing the following settings, click Apply button to take effect the new settings, or Cancel button to revert to the original settings. Setting Data Rate Transmit Power Antenna Description This defines the data rare (in Mbps) which the device should transmit wireless packets. Higher data rates will get higher throughput but be achieved at closer distances. You can fix a specific data rate (MCS0 to MCS15) or select the Auto option to get the best data rate dynamically according to link quality condition. It is recommended to use the Auto option, especially if you are having trouble getting connected or losing data at higher data rate. This will configure the maximum average transmit power (in dBm) of the wireless device. The transmit power will affect the wireless coverage; however, setting higher transmit power may cause connecting issue in indoor environment or the distance is not long enough between two devices. This option is supported for CJM210EC to use 26 Aggregation WMM internal chip antenna or external antenna. A part of 802.11n standard. It creates the larger frame by combing smaller frames with same physical source and destination and QoS into one large frame with a common MAC header. Frames: the number of frames combined on the new large frame. Bytes: The size of the large frame Part of the 802.11e QoS enhancement to the Wi-Fi standard. It is recommended to enable this setting for 802.11n wireless mode to enhance traffic throughput. 27 4.3.6 Serial to Network This device supports the communication between COM port and wireless or Ethernet interface. This page is to configure the UART/RS232 port and the TCP/UDP network settings. 1. Go to System Configuration--> Serial to Network. The Serial to Network page appears. 2. After finishing the following settings, click Apply button to take effect the new settings, or Cancel button to revert to the original settings. UART Setting UART Port Baud Rate Flow Control (RTSCTS) Description The UART0 is low speed UART port and UART1 is high speed UART port. The low speed UART port supports the baud rate from 300 to 115200 and the high speed UART port supports the baud rate from 115200 to 3000000. You have to select the right one for communication, depends on the capability of the other side. The default is 115200. To enable or disable the hardware flow control RTSCTS. This option is only supported by high speed UART. 28 Network Protocol Setting Protocol Network Mode Port Send Port Listen Port Max. TCP Clients Remote IP Address Description To establish TCP or UDP connection. To be server or client mode. For TCP protocol, the port number is as listen port when the Network Mode is server, and is as send port when the Network Mode is client. The send port for UDP protocol. The listen port for UDP protocol. When configured as TCP server, the max. TCP clients are accepted. This option is for the function of multiple TCP connections. When the Network Mode is client, you have to indicate the server side IP address. The broadcast option is only supported for UDP protocol. 29 4.4 Managing the Device 4.4.1 Administration The Web management is only allowed the authorized user to login. The default user name is Admin, and default password is empty. You can change the administrative login settings in this page. 1. Go to Management --> Administration. The Administration page appears. 2. 3. 4. 5. Click Apply button to take effect the new settings, or Cancel button to revert to the In Name, type a new user name that you will use to log in to the Web interface. In New Password, type a new password to replace the old one. In Confirm New Password, re-type the new password. original settings. 4.4.2 Backup/Restore Settings You can save the current device settings to a file or restore the saved settings file to the device to revert the old settings. 1. Go to Management --> Backup/Restore Settings. The Backup/Restore Settings page 30 appears. 2. Click on Backup button to save the current device settings. 3. In Restore Saved Settings from A File, click the browse button to select the saved settings file and click Restore button to load the file. After rebooting the device, the new settings will take effect. 4. Click Factory Default button to reset all the settings to factory default values. After rebooting the device, the default settings are reverted. 4.4.3 Firmware Upgrade 1. Go to Management --> Firmware upgrade. The Firmware Upgrade page appears. 2. Click the Browse button to select the firmware image file, and click the Upgrade button to proceed the update of firmware. It will take around 90 seconds to finish the firmware update. Once the firmware is updated successfully, the device will reboot automatically. 31 4.4.4 Time Settings The device supports two ways to configure the system time. The first is to configure the date and time manually, and once the device is rebooted, the current time will revert to the default value, and it is needed to re-configure the date and time again. The other way is to use NTP protocol to get the date and time automatically. If you dont specify the IP address of NTP server, the system will get the date and time from public NTP server via internet. 1. Go to Management --> Time Settings. The Time Settings page appears. 2. Decide which option you want to take:
Manually Set Date and Time. 3. If the Manually Set Date and Time is selected, input the current date and time, and click Apply button to take effect. If the Automatically Set Date and Time is selected, specify the Time Zone that your country is located. If you dont specify the IP address of NTP server, the system will get the date and time automatically from internet. Click Apply button to take effect the time settings. Automatically Set Date and Time 4. NOTE: If the NTP server is located on internet, please make sure the device is able to connect to the internet via the deployed network. 32 4.4.5 Diagnostics The Diagnostics is to provide tools to understand the network connecting status. The Ping utility is used for the preliminary link quality and packet latency estimation between two network devices using the ICMP packets. The Traceroute utility is used for tracing the hops route from the device across the network to a selected outgoing IP address. In Ping test, specify the following parameters:
1. Parameter Target IP Ping packet size Number of Pings Description The IP address of the other network device Specify the packet size of each ICMP packets Specify the ping packet numbers for the test 2. Click the Start Ping button; it will pop up a window to show the test result. 3. In the Traceroute test, specify the target IP address and click the Start Traceroute button to start the test. 33 4.4.6 System Reset You can use this function to reboot the system without changing any of the current settings or reset to factory default settings and reboot the system. 34 FCC Warning Statement 1. 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. You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment. 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. FCC RF Radiation Exposure Statement This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body. This module is intended for OEM integrator. The OEM integrator is responsible for the compliance to all the rules that apply to the product into which this certified RF module is integrated. Additional testing and certification may be necessary when multiple modules are used. 35 2. 3. 4. 5.