User's Guide
IOT Gateway User Guide
4. Electrical Specifications
5. External interface
5.1 Network interface
The IOTGateway supports following ways to connect to the internet:
1. Wi-Fi
2. Ethernet cable
3. LTE Cellular network (optional, only available when the LTE modem and adapter board is
correctly inserted);
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
There are two interfaces for power supply: macro USB interface and external +12VDC
Supply
● 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 don’t insert two power supplies at the same time, otherwise the IOTGateway may be
damaged.
Copyright by Caribou Technologies. public 4
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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
173*90*40mm
Material
ABS