FCC ID: 2AS3P-6005-01 Playzoom Walkie Talkie

IOT Gateway User Guide IOT Gateway User Guide Revision History Version Date Change Description Author 2020/12/1 Initial Release S. Turner 2020/2/1 Addition of Minusforty Label S.Turner V1.0 V1.2 Copyright by Caribou Technologies. public 1

16 IOT Gateway User Guide Contents Purpose Introduction IOTGateway External Images Electrical Specifications External interface Network interface Power supply interface External connectors TTL Modbus Connector Pinout LED indicators Reset and Factory Reset Network Architecture Connect to IOTGateway Network interface Configure WAN interface Procedure to Insert LTE SIM card 9 Please note: This procedure is only for IOTGateway with USB adapter and LTE module 9 installed. The SIM card installation procedure is outlined below. Connect to internet by Ethernet Connect to internet by Wi-Fi Connect to internet by LTE Setting Up a Hotspot to share and LTE Network Connection Configure IOTGateway Wi-Fi AP Modifying the Web Portal Login Password 3 3 3 4 4 4 4 5 6 7 8 10 11 12 12 12 13 14 14 14 15 Copyright by Caribou Technologies. public 2

16 IOT Gateway User Guide 1. Purpose 2. Introduction This document describes the basic functions and physical interfaces of the IOTGateway and is intended to guide users through the installation and configuration process. The IOTGateway is designed to connect a variety of commercial devices such as refrigerators and freezers to the Internet. The IOT Gateway supports connection to the cloud via Ethernet, Wi-Fi or LTE interfaces and can connect to a suitable industrial device via a TTL Modbus interface. After correctly configuring, the IOTGateway will periodically connect to the industrial device, monitor operational parameters (via the TTL Modbus interface) and upload data to the cloud monitoring platform. 3. IOTGateway External Images Bottom Copyright by Caribou Technologies. public 3

16 Front Label Option1 Label Option 2 Front Rear Side IOT Gateway User Guide 4. Electrical Specifications External DC Power

+6V to +18V DC USB Power

+5V (USB) LTE Modem LTE B2/B4/B5 Wi-Fi Connection 802.11n 2.4GHz Max Power Consumption 5W Size Material 173*90*40mm ABS 5. External interface 5.1 Network interface The IOTGateway supports following ways to connect to the internet:

1. Wi-Fi 2. Ethernet cable correctly inserted);

3. LTE Cellular network (optional, only available when the LTE modem and adapter board is 4. The IOTGateway supports Wi-Fi Mesh Networking, which means one IOTGateway can connect to the internet via another IOTGateway. In this mode the master IOTGateway can share its LTE connection to a number of other IOTGateways connected over Wi-Fi 5.2 Power supply interface Supply There are two interfaces for power supply: macro USB interface and external +12 V DC The IOTGateway can be powered directly through the TTL Modbus connector. The external supply range is from +6VDC to +18VDC (details of the connector pinout can be found in section 7) The TTL Modbus connector also provides an isolated power fail detection circuit to provide an alert when the main power fails and the IOTGateway is powered from the external battery backup supply. Macro USB power supply, powered by the 5V/1A DC. Warning:

The IOT can only use one of the two power supplies at the same time. Please dont insert two power supplies at the same time, otherwise the IOTGateway may be damaged. Copyright by Caribou Technologies. public 4

16 IOT Gateway User Guide Copyright by Caribou Technologies. public 5

16 IOT Gateway User Guide 6. External connectors The following connectors are located in the covered section at the base of the IOTGateway Copyright by Caribou Technologies. public 6

16 IOT Gateway User Guide 7. TTL Modbus Connector Pinout The IOTGateway includes a TTL Modbus connector as shown below to allow the Gateway to communicate with an external industrial device such as a refrigerator or freezer. The following image shows the connector pinout. Copyright by Caribou Technologies. public 7

16 IOT Gateway User Guide 8. LED indicators The gateway has 5 LED indicators. The LEDs are located to the right side of the case as shown below. The LEDs are located inside the plastic case to protect the water resistance of the case and can not be seen from the exterior of the case. Indicates that the IOTGateway is successfully powered. Indicates that the IOTGateway Wi-Fi interface is active Indicates that the IOTGateway LTE interface is active Blue Indicator Light White Indicator Light Yellow Indicator Light Green Indicator Light Red Indicator Light Indicates that IOTGateway is successfully connected to the Cloud Application Indicates that a power fail has occurred and the unit is powered from the backup Copyright by Caribou Technologies. public 8

16 IOT Gateway User Guide 9. Reset and Factory Reset The RESET button is situated next to the ethernet slot on the gateway as shown below. The reset button can be pressed using a suitable tool such as paperclip. a) b) If the RESET button is pressed for less than 30 seconds a gateway REBOOT is initiated. The IOTGateway takes approximately -1 minute to reestablish a network connection and come back online after a reset. If the RESET button is pressed for more than 30 seconds a factory RESET is initiated. The factory reset erases all network credentials in addition to cleaning up local files and logs on the device. Copyright by Caribou Technologies. public 9

16 IOT Gateway User Guide 11. Procedure to Insert LTE SIM card Please note: This procedure is only for IOTGateway with USB adapter and LTE module installed. The SIM card installation procedure is outlined below. 1. Start with the IOTGateway closed and face down. 2. Slowly slide the electronics assembly from the case being careful to prevent antenna cables being entangled. The SIM card connector is positioned to the underside of the LTE adapter board. Situate the SIM card as shown. 3. Push the SIM card into the connector using a suitable plastic tool. 4. Slide the electronics assembly back into the case being careful to prevent damage to internal components or antenna cables. 5. The SIM Card assembly process is now complete. Copyright by Caribou Technologies. public 10

16 IOT Gateway User Guide 12. Network Architecture The IOTGateway can be configured via a web application running on the device. A Chrome browser is recommended to use for the configuration either from a computer or mobile device. The web configuration tool running on the IOTGateway provides a variety of configuration settings such as Wi-Fi SSID and Password, LTE APN and Network connection (Wi-Fi, Ethernet, LTE) As shown above, each base station has two interfaces with different IP addresses. One of these IP addresses (referred to as the WAN port) is used to connect to the internet network

(MQTT server), which has a series of firewall rule protection. The other IP address (referred to as LAN port, also known as the intranet interface) is used for Wi-Fi hotspot broadcasting. WAN Port:

This interface supports Wi-Fi, ETH (network wire) or LTE Network. The IOTGateway can connect to a router via Wi-Fi or LAN network cable. Alternatively, if equipped with an LTE modem,the IOT Gateway can connect to the network via the LTE modem In all cases the IP addresses are assigned by routers/Cellular Network. The base station is connected to the MQTT/HTTPs server through this interface. For WAN address IP address configuration see "12.2.1 configuring WAN port network connection". LAN port:

This interface only supports Wi-Fi. The default IP address of this interface is 192.168.8.1, a PC or mobile device can connect to this interface through Wi-Fi, or the next IOTGateway can connect to the internet via the upper layer IOTGateway. The gateway can only be configured through the Wi-Fi interface. Configuration via the ethernet port is not possible. Copyright by Caribou Technologies. public 11

16 IOT Gateway User Guide 12.1 Connect to IOTGateway After power on, the IOTGateway will automatically broadcast the Wi-Fi SSID using the default Wi-Fi name the IOTGateway. IOTGW_???????????? where ???????????? is the serial number for Select the required IOTGateway. The Wi-Fi interface is secured using WPA encryption. The default password is set to IOTGateway. The default password can be modified in the configuration utility. The default IOTGateway configuration IP address is 192.168.8.1 Login in to the IOTGateway configuration utility by typing http://192.168.8.1 in the browser. The following logon screen will be displayed. technical support Contact for default Username and Password to log into the configuration utility Copyright by Caribou Technologies. public 12

16 IOT Gateway User Guide 12.2 Network interface Configuration 12.2.1 Configure WAN interface Tap on internet network using Wi-Fi /Ethernet/LTE connection. Network to go to the network configuration page. You can choose to connect to the 12.2.1.1 Connect to internet by Ethernet The IP address can be assigned as DHCP or static configuration. 12.2.1.2 Connect to internet by Wi-Fi Copyright by Caribou Technologies. public 13

16 IOT Gateway User Guide Note: The device cannot connect to an WPA2-PSK (AES) encrypted network. Connect to a hidden Wi-Fi AP:

You may see some Wi-Fi names like mac addresses; it means that Wi-Fi has been hidden. You should input the Wi-Fi name and password if you want to connect to it. If your Wi-Fi AP name does not appear in the nearby WLAN list, please try to reboot the IOTGateway. (you can reboot the device from the Others tab) Copyright by Caribou Technologies. public 14

16 IOT Gateway User Guide 12.2.1.3 Connect to internet by LTE Please make sure your SIM card is inserted into the IOTGateway. Setting Up a Hotspot to share and LTE Network Connection 12.2.1.4 The Hotspot box must be enabled in the Network tab to allow for LTE network sharing. If hotspot sharing has been selected, additional IOTGateways can connect to the LTE IOTGateway over Wi-Fi and access the internet via the shared LTE connection. 12.3 Configure IOTGateway Wi-Fi AP The AP LAN IP address can be changed from the following screen. Copyright by Caribou Technologies. public 15

16 IOT Gateway User Guide 12.4 Modifying the Web Portal Login Password The following page can be used to configure a new user password Copyright by Caribou Technologies. public 16

16 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 inte rference received, including interference that may cause undesired operation. Changes or modifications 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 interferenceto 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. Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AS3P-6005-01 Label and Location Playzoom Walkie Talkie Model No.:9000208 FCC ID: 2AS3P-6005-01 Size: L 1.2cm*W0.3cm Label Location This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 1

American Exchange Time LLC Agent Authorization Company: American Exchange Time LLC Address: No.1441 Broadway 27th Floor, New York, NY 10018,United States Product Name: Playzoom Walkie Talkie Trade Mark:

Model Number(s): 9000208,9000207,9000209 FCC ID: 2AS3P-6005-01 We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Date: 2021-02-01 Name:

Daisy Zhang Title:

Product Manager Company: American Exchange Time LLC

American Exchange Time LLC Address:No.1441 Broadway 27th Floor, New York, NY 10018,United States We, American Exchange Time LLC Hereby declares the following statement for MiCOM Labs Inc, PCB board, structure and internal of these model(s) are the same, Only models name is different for these models:

Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Dear Sir/Madam, Product Name: Playzoom Walkie Talkie Trade Mark:

Model Number(s): 9000208,9000207,9000209 FCC ID: 2AS3P-6005-01 Signature:

Date: 2021-02-01 Name:

Daisy Zhang Title:

Product Manager Company: American Exchange Time LLC

American Exchange Time LLC Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject; Request for Confidentiality FCC ID: 2AS3P-6005-01 Date: 2021-02-01 To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure External Photos Test Setup Photos Internal Photos User Manual Sincerely, Signature:

Name: Daisy Zhang Title: Product Manager