More FlexibilityThe receiver adopts 40A relay, which can load high-power electrical appliances to ensure long-term stability control. Each receiver can store about 20 transmitters. And One transmitter can control multiple receivers too( the transmitter need to match with receiver ).Quality AssuranceHigh-quality relay that can be used over 100,000 times.Let this product can be more long-lasting and stable to use.The high-power terminal can withstand a current of 40A, so that this product can have a good effect even when the current is unstable. The receiver is suitable for 12V~75V voltage, it is more flexible to use.Great design433Mhz RF wireless remote control switch.Stable and reliable performance with high reception sensitivity (> - 105dBm). Strong signal can pass walls, floors, doors.It can be controlled within 50 meters distance with no obstacle.There is an antenna extend out of the box, so that you can stretch it for the better signal reception.Wide ApplicationProducts can be used in homes, farms, factories, offices, laboratories, supermarkets and so on.You can remotely operate every device connect with the relay receiver through the remote control. such as lights, pump, wireless security alarm, fan, Lamp, wireless door alarm, ventilation device, monitor, printer, fountain and other electrical equipment etc.Easy to useExtremely easy to set up and reset. There are 3 operating mode(momentary/toggle/latched mode) can be chosen.You can easily set up by yourself depends on your needs. The operating mode of the product is adjustable.This item has already been set up in latched mode. And "ON" button to turn on, and "OFF" button to turn off .