Specifications: 1 button remote control operation (self-locking/jog): input 3.7V-24V for the receiver, short-circuit learning point, the receiver LED indicator flashes slowly. Press the remote control button once, the LED indicator flashes 3 times, then press the remote control button once, and the LED indicator flashes 3 times again, indicating the learning result. 2-button remote control operation (interlock): input 3.7V-24V for the receiver, short-circuit the learning point, and the receiver LED indicator lights. Press the remote control button A once, the LED indicator flashes 3 times, then press the remote control button B once, the LED indicator flashes 3 times again, indicating that the learning is successful. Jog: press and hold the remote control button, the corresponding relay is turned on, release the remote control button, and the corresponding relay is disconnected. Self-locking: press the corresponding remote control button once, the relay is turned on, and then press the corresponding key remote control button again, the relay is disconnected. Interlock: press the corresponding button of the remote control, the corresponding relay is turned on, and then press another button of the remote control, the relay is disconnected. Item Name: Remote Control Switch Working Voltage: DC12V Working Current: 12mA Quiescent Current: 0mA Working Frequency: 315MHz/433Mhz (Optional) Chip Type: Learning Code (1527), etc. Oscillation Resistance: 330K Launch Distance: 10-50m/32.8-164ft (Approx.) (Open Space) Modulation Method: ASK Amplitude Modulation Features: Single Channel, Mini, Wireless Receiver Module Size: 25mm x 11mm x 8mm(Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Receiver 1 x Transmitter