Description

Key Features

• Quad-band GSM/GPRS: 850 / 900 / 1800 / 1900 MHz

• Supports SMS, voice calls, and GPRS data

• TTL serial interface for easy microcontroller communication

• Compact and lightweight design

• Low power consumption

• External antenna interface for improved signal strength

• Embedded AT command support

• Supports Bluetooth and FM (chip-level support

Technical Specifications

• Chipset: SIM800H

• Communication: GSM / GPRS

• Operating Voltage: 5V

• Interface: UART (TTL Serial)

• Dimensions: 15.8 × 17.8 × 2.4 mm

• Frequency Bands: Quad-band GSM

• SIM Card Support: Standard GSM SIM

• Antenna Interface: External antenna connector

Pin Interface

• VCC – 5V Power Supply

• GND – Ground

• TXD – Transmit Data

• RXD – Receive Data

Applications

• IoT and smart monitoring systems

• Vehicle and asset tracking

• SMS-based alert systems

• Remote switching and automation

• Arduino, ESP32, and microcontroller projects

• Security and alarm systems