Universal 433 MHz 2 channel Long-Range receiver (programmable) Learn button for easy programming Co-axial antenna not included (SAE433) Keeloq rolling code for ultimate security Accepts 85 transmitter keys (42 two-button remotes) 12-24 Volt AC/DC input voltage 1 NO relay & 1 NO/NC relay One relay can be programmed for pulse latch toggle or timed Approximate distance of 1500 feet (clear line of sight) This receiver works where others won't !!!!