Easy to Use: The transmitter and receiver are pre-paired and tested before shipping. Simply install upon arrival. 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, 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 areas. Learning Code: Features a learning code system with high security due to low repetition rate. Supports code deletion and re-learning, allowing you to maintain control if a remote is lost. Buttons: 2 buttons Remote Distance: 20-50 meters Working Frequency: 433 MHz Max Load Current: 30A Encoding: Fixed code / EV1527 Color: Black Material: Plastic Package Contents: 1 x Remote Switch, 2 x Remote Controls