eMylo DC 12V 1CH RF Relay Wireless Remote Control Light Switch 433Mhz Relay Receiver with Wireless Transmitter 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. Input Voltage: DC 12V Operating Frequency: 433Mhz Coding Way: Intelligent Learning Output Type: Active output Max load: 10A Ambient TEMP: -30-70, Humidity&lt;95% Factory Default: Self-locking Board Dim: 45x30.5x17mm Case Dim: 60x38x13mm Quantity: 4pcs Operating Voltage: 12V Operating Frequency: 433Mhz Vibration Resistance: 126 Chip Type: 2260/1527 Modulation: ASK (Stable, less interference) Encode Type: Bonding pad welding code/group code Battery Type: 12V 27A(not included) Remote Distance: 20m (Theoretical value) Ambient TEMP: -30-70, Humidity&lt;95% Product DIM: 54x30x13mm Quantity: 2pcs