SIM800L is a miniature cellular module which allows for GPRS transmission, sending and receiving SMS and making and receiving voice calls. Low cost and small footprint and quad band frequency support make this module perfect solution for any project that require long range connectivity. After connecting power module boots up, searches for cellular network and login automatically. On board LED displays connection state (no network coverage – fast blinking, logged in – slow blinking).
Be prepared to handle huge power consumption with peek up to 2A. Maximum voltage on UART in this module is 2.8V. Higher voltage will kill the module
Description:
Chip: SIM800L
Voltage: 3.7-4.2V
Support networks: China Mobile, China Unicom and global quad-band network
Module size: 2.5cmx2.3cm
TTL serial port for serial port, you can link directly to the microcontroller. No need MAX232
Power module automatically boot, homing network
Onboard signal lights all the way . It flashes slowly when there is a signal, it flashes quickly when there is no signal
Pinout (bottom side – left):
- RING (not marked on PBC, first from top, square) – LOW state while receiving call
- DTR – sleep mode. Default in HIGH state (module in sleep mode, serial communication disabled). After setting it in LOW the module will wake up.
- MICP, MICN – microphone (P + / N -)
- SPKP, SPKN – speaker (P + / N -)
Pinout (bottom side – right):
- NET – antenna
- VCC – supply voltage
- RESET – reset
- RXD – serial communication
- TXD – serial communication
- GND – ground
Muhammad Ahsen –
Purchased two SIM800l modules from here, very much reasonably priced and less than market rate.
The modules had no issue and works fine. I am happy for my purchase. Thank you, epro.