TTGO TCall & SIM800C-DS V02 ESP32 WIFI Bluetooth Nano Card Slot SIM800C Development Board Mornsun LM150-22B48 AC/DC 150W Enclosed Switching Power Supply Easy to Cut & Install:

Easy to Cut & Install: Semi-flexible tubing can be cleanly cut with a sharp blade or dedicated PTFE cutter and fits standard pneumatic couplers (PC4-M6

Module Pin Connection VCC (+) Battery positive terminal GND (-) Battery negative terminal > Note: Ensure the battery voltage falls within the module's supported input range

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What type of 18650 battery should I use

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TTGO TCall & SIM800C-DS V02 ESP32 WIFI Bluetooth Nano Card Slot SIM800C Development Board Mornsun LM150-22B48 AC/DC 150W Enclosed Switching Power Supply Easy to Cut & Install:TTGO TCall & SIM800C DS V02 ESP32 WIFI Bluetooth Nano Card Slot SIM800C Development Board The TTGO TCall & SIM800C DS V02 is an integrated IoT development board combining ESP32 microcontroller with SIM800C GSM module, enabling simultaneous WIFI, Bluetooth, and cellular connectivity in a compact form factor. Professional embedded systems engineers and IoT developers use this board to build remote monitoring systems, GPS tracking devices, and cellular