eMylo AC 220V-230V-240V 1000W 1 Channel RF Relay Smart Wireless Remote Control Light Switches 433Mhz Transmitter with 4pcs 1CH Receiver The product adopts RF technology, with long remote control distance and stable signal. The receiving module provides high signal sensitivity at lower cost and resist interference for excellent stability. It adopts non-directional wireless encoding technology, allowing independent control without mutual interference. The programmable transmitter and receivers can be flexibly configured in quantity and in operating modes. It is widely used in industrial control and security fields, such as light, motor, remote controller, wireless security alarm, wireless door alarm, wireless controller, etc.