Features: Improve your wireless communication with the RT18A01 RS485 Transceiver Wireless Repeater Control 433M 868M FSK Uhf Module! With a working voltage of DC5V and an air-to-ground transmission distance of 500M, this module is perfect for long-distance data transmission. Designed for professionals in the IT industry, home automation and remote control systems, this module is for developers and engineers. Whether you need to configure a Modbus temperature sensor or an LED controller, this module is versatile enough to be used in various applications. Get reliable and fast wireless communication with RT18A01 RS485 Transceiver Wireless Repeater Specifications: Working voltage: 4.5V-5.5V Interface: RS485 Frequency: 433MHz/868MHz Transmitting power: -40~+20dBm Receiver sensitivity: -114dBm Operating temperature: -25℃~+75℃ Transparent transmission mode baud rate: 1200 2400,4800,9600(Default),19200 AT configured baud rate fix is: 9600BPS Open ground transmission distance: 500M Size (without antenna): approx. 58.5x30x13.8mm/2.28x1.18x0.54in Note: There may be a little color distortion due to different computer resolutions. There may be size errors due to different computer resolutions. Package includes: 1PC RT18A01 Module