??Great Design??433MHz RF wireless remote control switch.Stable and reliable performance with high reception sensitivity (>97dbm).Radio frequency signal transmission.A strong signal can pass through walls, floors, doors, signs, etc.It can be controlled within 50 meters away in an open area.The chip code is EV1527 learning code which is the most popular technology which makes the remote control system safer. ??Easy to Use??Extremely easy to set up and reset.There are 3 operating modes (momentary/toggle/latch mode) that can be configured.You can easily configure it yourself according to your demands.The operating mode of the product is adjustable.This item has already been configured in toggle mode.It can also be configured in mix mode.Like 2 channels in momentary mode and 2 channels in toggle mode. ??More Flexibility??This receiver contains 4 relays, and there are 3 terminals (normally open, common, normally closed) for each relay.These 4 relays are independent, so you can remotely control each of them independently.Each receiver can store approximately 20 transmitters.And one transmitter can control multiple receivers.For example, you can use two relays to control the garage door/motor and the other two to control the lights. ??Quality Assurance??High quality relay can be used more than 100,000 times.Let this product last longer and be more stable to use.The high-power blue terminal can withstand 10A current, so this product can have a good effect even when the current is unstable.The receiver is suitable for 85V~240V voltage, it is more flexible to use. ??Wide application??Products can be used in homes, farms, factories, offices, laboratories, supermarkets, etc.You can remotely operate each device connected to the relay receiver via the remote control.such as truck trunk, garage door, electric door, shutter door, extension door and electric curtain, fan, lamp, lighting, ventilation device, signal transmission, etc.