SIM800L GPRS GSM Module – Quad-Band TTL Serial Port
Pinout Configuration of SIM800L GPRS GSM Module

Pin Number | Pin Name | Description |
1 | NET | External antenna attachment pin |
2 | VCC | Power supply pin, 3.4V to 4.4V input |
3 | RST | Reset pin, pull low for 100ms to perform hard reset |
4 | RXD | Serial data input |
5 | TXD | Serial data output |
6 | GND | Module ground reference |
7, 8 | SPK | Speaker differential output |
9, 10 | MIC | Microphone differential input |
11 | DTR | Serial data terminal ready pin, pull high to enable sleep mode |
12 | RING | Interrupt output, active low |
Specifications of SIM800L GPRS GSM Module
| IC Chip | SIM800L |
| Operating Voltage (VDC) | 3.7 ~ 4.2 |
| Peak Current (A) | 2 |
| Shipment Weight | 0.01 kg |
| Shipment Dimensions | 9 × 6 × 3 cm |
Applications of SIM800L GPRS GSM Module
- Home automation
- Emergency systems
- Remote sensing
- Communication
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