Item Type: Wireless Remote SwitchMaterial: ABSWorking Voltage: 220VWorking Temperature: -40 +80Receiver Sensitivity: Greater Than -110dBmWorking Frequency: 433MHzMaximum Load Current: 30AUses: Water Pumps, Motors, LampsBuilt In Button Battery in the Remote Control: 2 x CR2016(75mAh)Package List1 x Relay1 x Remote Control1Radio Frequency Technology: Using radio frequency technology, the signal can pass through walls, floors and doors to stably control the receiver anywhere within a reliable distance. 2Stable: The 30A relay of the receiver can load high power electrical appliances to ensure long term stable control. The performance is stable and reliable, and the receiving sensitivity is high. 3High Security: Low repetition rate and re learning mode, when the remote control is lost, it can delete the old code and re learn the new code, so you can control it at any time. 4Easy to Set Up: The remote control switch is very easy to set up, learn, relearn and control. Equipped with 1 remote control, it is more flexible to use. 5Widely Used: Mainly used in lighting, electric doors and windows, lifting equipment, gates, elevators, industrial control and security industries and other fields.