Features High Quality: It is a learning code wireless remote control switch(receiver). It is easy to match the transmitter(remote control). Scope Of Application: This 12v dc remote switch is perfect wireless relay remote control for computer mainframe. Multifunction: The remote relay switch 12v covers application ranging from like auto door, window, lifting equipment, entrance access, etc. Excellent Performance: Strong signal which can pass through walls, floors and doors, control receiver from any place within a reliable distance. High Stability: The volume is small and the performance is stable and reliable, high receive sensitivity. Description: Specifications: Operating voltage: DC4V 12V (DC4V 4.5V 5V 6V 7.4V 9V 12V). Standby current: 7-9 mA. Working current: 70-130mA. Relay standard: 20A (14VDC 12A 120VAC 7A) Max load: 10 A (better load is less than 7 A). Learning code: learning button to add a transmitter Working mode: Momentary toggle set by Jumper Compatible: for computer mainframe Size: approx. 43 x 30 x 22 mm / 1.69 x 1.18 x 0.87 inches. Remote size: approx. 60 x 30 x 12 mm / 2.36 x 1.18 x 0.47 inches. Quantity: 1 piece. Package weight: 50g. Box contents: 1 x relay remote switch. 1 x transmitter. (Other items in the picture are not included) Momentary ---- Press and hold ---- ON, Release ---- OFF Toggle ---- Press Once ---- ON. Press it again ---- OFF. GND ---- Input GND - VCC ---- Input VCC + NC - Normally Closed COM ---- No. Normally open. Unlock Code: Press the learning button of the receiver and hold it for about 5 seconds until the LED indicator of the receiver goes from ON to OFF. This means that the code has been deleted. Learning code: Momentary / toggle mode: Press the learning button of the receiver, the LED indicator of the receiver flashes slowly, which means you switch to learning status, press the transmitter button, the LED indicator of the receiver flashes 2 times quickly and then flashes slowly, i.e. learning is successful. Press the learning button again to turn off the LED indicator. This means that learning is over. Package List