Code Secure Encryption Based One Way Key Fob is a remote switch that is used to arm or disarm the system as user leave or enter home and has a soft touch design, just like the remote used to lock and unlock cars. The One Way Key Fob is designed for emergency signalling and is ideal for home automation and remote control applications. The One Way Key Fob is based on code secure encryption technology and comes with visible and transmitted low-battery indication facility.