Build these Keypad Switchs using off-the-shelf components. Although designed to control a Burglar Alarm - they will have other uses.

COMMENTS SUGGESTIONS	Connect Keypads To The Single Zone Alarm	MORE ALARM CIRCUITS

Single Zone Alarm Schematic	The Rest of Ron's Circuits	Write To Ron	More Free-to-Use Circuits	Circuit Exchange International

Four-Digit to SZA

How To Connect the Four Digit Keypad to the Single Zone Alarm

How to connect the
Four-digit Keypad to
the Single Zone Alarm

Five-Digit to SZA

How To Connect the Enhanced Alarm Keypad to the Single Zone Alarm

How to connect the
Five-digit Keypad to
the Single Zone Alarm

Suppliers	Worldwide RS Components	Uk & Ireland Maplin