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King Pigeon Communication Co., Ltd.
V1.0
www.iot-solution.com
Modbus to MQTT IoT Gateway
-BL101
inverse connection protection.
2.3
SIM Card and SD Card Slots
Before inserting or removing SIM card, please make sure device is turned off. Insert
SIM card picking PIN to the small hole of card slot and eject the card slot with tiny
force.
Note: Place the device like above picture to insert/remove SIM card
2.4
Program Debugging & Upgrading Interface
DEBUG USB port is for program debugging. DOWNLOAD USB port is for program
upgrading.
2.5
Device Grounding
Before connecting the device, please do equipment grounding with grounding screw
to prevent electromagnetic interference