1.This SIM800l module has a set of TTL level serial interface, a set of power supply interface. Besides, there are a set of antenna interface on this module.

2.SIM800H is a complete Quad-band GSM/GPRS solution in a LGA type which can be embedded in the customer.

3.Work voltage: 3.7~5V.

4.Network support: Quad-Band 850 / 900/ 1800 / 1900 MHz – would work on GSM networks in all countries across the world.