If the idea of using a key to activate or disarm your security makes you uncomfortable try this key pad entry contact alarm system from Thomas & Betts, Carlon/Dimango. The unit has four operational modes: chime, instant alarm, delayed alarm, and off. It also includes a panic button for emergency scenarios.
Alarm chime sounds when magnetic contact is separated
Programmable key pad code to disarm unit
Four operational modes: chime, instant, delayed or off
Security code can be changed to your own personal code
Magnetic sensor can be installed on either side for better mounting versatility
Panic button sets off alarm even without opening the door
Select chime to announce entry of a visitor
If you select instant when you are inside a loud alarm will sound immediately