Features: 1.High Power Load: The 220V 380V wireless remote control switch adopts 30A relay, which can load high power electrical appliances to ensure long term stable control. (maximum load: 30A) 2.Strong Signal: The wireless remote control switch uses RF technology to penetrate wall, floors and doors to control the receiver anywhere within a reliable distance. The maximum range is up to 500 meters without obstacles. 3.High Sensitivity: The sensitivity of the wireless control switch is ?114dBm, the performance is stable and reliable, the receiving sensitivity is high, and the anti interference ability is strong. 4.Wide Application: This motor remote switch is used in various types of electrical equipment such as pumps, mud pumps, motors, lamps, fans, insecticide machines, sprayers, car washes, electric bells, etc. 5.Ease of Control: Learning Code has a high level of security due to its low repetition rate and relearning mode, it can delete old code and relearn new code. There is a switch key on the relay. If the remote control is lost. You can also control it anytime. (To use, you need to move the plastic slider on the side of the remote to a specific position.) specification:Item Type: Wireless Remote Control Switch Material: ABS Working Voltage: 220V/380V Receiver Frequency: 433MHz Receive Sensitivity: -111dB Output State: Switch Quantity Maximum Load: 30A Remote Control Battery: 1 9V Alkaline Battery (Not Included) PackageList: 1 xWirelessRemoteControlSwitch 1 x Remote Control Note1. Clear code: Press the learn button on the receiver for 5 seconds and the buzzer will "beep" 3 times, indicating that all transmitter codes in the receiver have been cleared. 2. If the motor is less than 3000W, the motor is directly connected to the receiver, and if the motor is greater than 3000W, a contactor needs to be added.