Product Description

Characteristics:

• Long distance wireless transmission (1200bps in 1200m/FU4 mode)
• Operating frequency range: 433-458 MHz, up to 255 communication channels)
• 100mW (20dBm) maximum transmit power and 8 tuning capability.
• Four working modes to suit different applications
• Built-in MCU, serial port and external device communication
• The number of bytes sent at a time is limited to 256 bytes. 
• Mode supports one-to-one, one-to-many, many-to-many connections

SPECIFICATION:

• Model: GT-38.
• Chip: SI4438.
• Communication interface: 3.3V to 5V TTL UART level.
• Operating voltage: 3.2V to 5.5V.
• Maximum transmit power: 20dBm.
• Reference distance: 1200 meters.
• Working frequency band: 433-458.5 MHz.
• Antenna interface: spring antenna / antenna plug.
• Current standby: no standby mode.
• Module size: 26.7×12.9x6mm.