The Wireless 6-Relay Receiver with Keychain Remote allows you to add wireless operation to any relay-controlled device, including sprinkler valves, magnetic locks, even the electric starter on your gas fireplace! This kit is equipped with 6 programmable form-C relays (rated at 3 amps at 12V), each of which can be programmed separately. And with 4 billion encrypted codes, you'll have the ultimate in system security. The Wireless 6-Relay Receiver with Keychain Remote offers flexible installation options. The relays can be Normally Open (N.O.) or Normally Closed (N.C.). You also have a choice of eight settings: Momentary Latched Validity 30-Second Timed 1-Minute Timed 5-Minute Timed 20-Minute Timed Strobe (repeated On/Off) Additional keychain remotes are available (sold separately). The flexible wire antenna is approx. 20" long and permanently attached to unit.