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


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