Features: Small size, stable and reliable performance and high receiving sensitivity. Quite easy method of setting up and using. Especially designed to control various electric equipments via wireless signal. Suppourts fixed code and learning code, and 1-channel or 2-channel Receiver Relay Switch can be optional, fully satisfying different users' needs. A wide application range from simple household remote controller to automatic controllers such as car door, car window, lifting equipment, access control, up and down controller, alarm system industrial control, security system, and etc. Working/Output Way: 1. Jog/Unlock----press one button is ON, loosen your finger on the same button is OFF (one channel switch needs one button to remotely control). 2. Self-lock----press one button for one time is ON, press the same button again is OFF (one channel switch needs one button to remotely control). 3. Inter-lock/latch-up----press one button is ON, press another button is OFF (one channel switch needs two buttons to remotely control). Specifications: Condition: 100% Brand New Material: PC Optional Channel: 1 channel, 2 channels Input Voltage: AC85V-AC220V RF Frequency: 433MHZ Receiver Sensitivity: -107dbm Remote Control Distance: >100m(In open environment) Code Type: Fixed code, learning code Rated Load: 10A 250V AC, 10A 125AC, 10A 30V DC, 10A 28V DC Package Weight: Approx. 23g/0.9oz(1 channel),35g/1.4oz(2 channels) Package List: 1 x Relay Switch . Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering