Features: Boost your wireless communication with 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 longrangedata transfer. Designed for professionals in the IT industry,home automation, and remotecontrolsystems, this module is for developers and engineers. Whether you need to setupaModbus temperature sensor or an LED controller, this module is versatileenough to be used in various applications. Get reliable and fast wireless communication with the RT18A01 RS485 Transceiver Wireless Repeater Specifications: Working voltage: 4.5V-5.5V Interface : RS485 Frequency: 433MHz/868MHz Transmit power: -40~+20dBm Receiver sensitivity: -114dBm Operating temperature: -25~+75 Transparent transmission modebaud 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 might be a bit color distortions due to different computer resolutions. There might be size errors due to different computer resolutions. Package includes: 1PC RT18A01 Module