Easy to Use: The transmitter and receiver are pre-paired and tested before shipping, so no additional setup is required—simply install and use. Widely Used: This remote switch is suitable for industrial control and security applications such as lights, motors, remote controllers, wireless security alarms, windows, lifting equipment, electric doors, wireless door alarms, security machinery, and other wireless control systems. Signal: The wireless RF signal can penetrate walls, floors, doors, and windows. Multiple units can be used in the same location. Turn the receiver on or off from any location within a reliable range of up to 164 feet (50 meters) in open area. Learning Code: Features a learning code system with high security due to low repetition rate and re-learn capability. Old codes can be deleted and replaced with new ones, allowing full control even if a remote is lost. Buttons: 2 Remote Distance: 20-50m Working Frequency: 433MHz Max Load Current: 30A Encoding: Fixed code / EV1527 Color: Black Material: Plastic Package Contents: 1 x Remote Switch 2 x Remote Controls Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3cm.