GSM SIM800L MINI RED
with spring Antenna
Mini GSM / GPRS breakout board is based on SIM800L module, supports quad-band GSM/GPRS network, available for GPRS and SMS message data remote transmission.
The board features compact size and low current consumption.
With power saving technique, the current consumption is as low as 1mA in sleep mode.
It communicates with microcontroller via UART port, supports SIMCOM enhanced AT Commands
GPRS multi-slot class12 connectivity: max. 85.6kbps (down-load/up-load)
GPRS mobile station class B
Real Time Clock
Power voltage 3.4V ~ 4.4V DC
A-GPS (Assisted Global Positioning System)
Supports 2.8V to 5.0V logic level
Low power consumption, 1mA in sleep mode
Compact size 23mm x 35mm x 5.6mm
Standard SIM Card
There are 12 total pins on the small SIM800L two parallel rows of six headers.
GND: Ground VCC: Supply Voltage
RST: Reset pin for SIM800L
RXD: Serial communication (Receiver Pin)
TXD: Serial communication (Transfer Pin)
RING: Low state while receiving call
DTR: Sleep mode
MICP: Microphone + MICN: Microphone –
SPKP: Speaker + SKPN: Speaker –
Its advisable to use diodes 1N4007 in series , as shown below to drop down supply volt below 4.7v
DC-DC BUCK converters based on LM2596 can also be used for power source.