Transceiver Module 433MHz Bus RF Serial Port RS485 UART Wireless Transmission Module DTU for LED Controller PTZ Camera

How to Use: Recommend to buy more than 2 pieces: 1. For 2PCS, module 1 and module 2 send data to each other. 2. For >=3PCS, one as master device, the other as slave device. The way they work is the same as wired RS485 bus: Master device transmit data, slave devices can all receive data, any slave device transmit data, master device and the other slave devices can receive.(When ever only allowed one device, master or slave, to transmit data) Specification: Item Type: Transceiver Module Material: ABS+PCB Model: RT38B01 Working Voltage: 4.5V-5.5V Interface: RS485(5V GND A+ B-) Operating Frequency: 433MHz(up to 255 communication channels) Transmit Power: -40 to +20dBm Receive Sensitivity: -114dBm Working Temperature: -25? to +75? Transparent Transmission Mode Baud Rate: 1200, 2400, 4800, 9600(default), 19200 Open Ground Transmission Distance: 500M Application:  For IP PTZ camera For R4D3C32 N4D8B08 N4D8C12 RS485 relay Temperature sensor LED controller Remote control, telemetry system Wireless instrument  Smart home, home automation Access control Smart meter Recognition system Data collection IT appliances Smart appliances Baby monitoring system, Thermometer Package List: 1 x Transceiver Module, 1 x Antenna Note: Pay attention to standard operation