AC-KP. The YALE Key Pad is compatible with the Yale Sync & Yale Intruder alarm ranges. It allows for remote arming and disarming of your alarm, plus an emergency alarm trigger option, within a range of up to 200m. The alarm is protected from disarming upon entering the property by the use of a pin code and several keypads can be fitted around the home to work with the same alarm system for increased security. Batteries and fixings are included and it comes with a range of up to 200m.. Allows for wireless arming/disarming of your alarm. Emergency alarm trigger feature. Protected from disarming by user pin code. Compatible with Yale Sync & Intruder alarm ranges