Product page:

Arduino guide page

Arduino GSM Library:


GSM Specs

3G with 2G fallback

Serial ports

USB connector – virtual serial port using the Serial object

Serial1 – Hardware serial port on pins 13/14, instead

Reset button

Reset button causes the microcontroller to reset and resets USB communication.

IO Pins

IO voltage: 3.3V

Pull Ups

We’ve not checked the datasheet but on setting the following pins to pinMode(#, INPUT_PULLUP) they all changed from measuring around 0V to 3.3V, so pull ups working on all of them:

IO0 – IO5, IO7-IO14 (note IO6 has LED connected so didn’t measure 3.3V)



LED is connected to IO6

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