eMylo DC 6V 4X 1CH 433Mhz RF Wireless Remote Control Relay 2pcs Switch Transmitter with Receiver Learning Code 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.