General description Universal Garage Door Opener Switch with 3 Remote Control RX Multi Frequency 300-868Mhz Receiver is designed for reliable operation in various environments. It operates within a voltage range of 9V to 30V and supports multiple frequencies, making it versatile for different garage door systems. Technical specifications Operating Voltage: 9V-30V Frequency: 300MHz - 868MHz Distance: 30-50 meters Color: White Material: Plastic Measurement allowed error: +/- 1-3cm Compatibility and accessories Includes 3 Remote Controls Package Contents: 1 Control Switch Kit