Features:

1. Long-distance wireless transmission (1200 bps in 1200 m/FU4 mode)

2. Operating frequency range: 433-458MHz, up to 255 communication channels)

3. Maximum 100mW (20dBm) transmit power, and can set 8 power.

4. Four working modes to adapt to different applications

5. Built-in MCU, communicate through serial port and external device

6. The number of bytes sent at one time is up to 256 bytes.

7. The mode supports one-to-one, one-to-many, many-to-many connections

Characteristic Parameters:

Model: GT-38

Chip: SI4438

Communication interface: UART 3.3V to 5V TTL level

Operating voltage: 3.2V to 5.5V

Maximum transmission power: 20dBm

Reference distance: 1200 meters

Working frequency band: 433-458.5MHz

Antenna interface: spring antenna / antenna socket

Sleep current: no sleep mode

Module size: 26.7x12.9x6m