Specifications: Transmitter Operating Voltage: 12V Operating Frequency: 433Mhz Vibration Resistance: 4.7M Chip Type: 2264 Modulation: ASK (Stable, less interference) Encode Type: Welding code Battery Type: 12V 23A(not included) Remote Distance: 150m (Theoretical value) Ambient TEMP: -30oC -70oC, …