brand new and high quality Feature: The wide voltage remote control switch can control the on and off of AC and for DC equipment, conversion and the requirements of various special control procedures. Widely used in for dc water pump, motor, electric appliances, light lamps, electric lock, curtains, doors, and other wireless control devices. Learning method: Press the learning for key once, the indicator light will flash slowly, then quickly press the A for key of the remote control, it will go out after quickly flash 4-5 times, which indicates the successful of the learning of A for key. The learning of B for key has the same method as the above after being pressed twice. Working modes: Jog: Press the remote control relay to pull in, and release the remote control to disconnect it. Self-lock: Press the remote control relay to pull in, and press it again to disconnect it. Interlock: Press the A for key of the remote control to pull in the relay, press B for key to disconnect it. Clearing mode: After connect the power, long press the learning for key, the learning indicator light will be for always on. Then it will go out after 6S, which indicates the successful of the clearing code. Warm tips: Before switching to any mode, you must clear the codes and then start to learn. Specifications: Item Type: Wireless Controller Switch Kits Material: ABS Size: 8x6x2.8cm/3.1x2.3x1.1in Color: White+Black Optional Type: A, B Voltage: DC12V/24V/36/48V Working frequency: 433mhz Coding mode: learning code Load Power: less than and equal to 10A Working mode: manual key: jog, self-lock, interlock Quantity: 1 PC Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Includes: 1/2 x Remote Control 1 x Receiver Module