A low-cost fault finder that will find a faulty sensor without the alarm system going off incessantly!

When false alarms occur on domestic and on cheaper/older commercial intruder alarm systems, it is often difficult to know which sensor has caused the alarm, and even if this is known, many panels do not have a soak test and log facility to test the would-be faulty sensor.

This simple, easy-to-build, low-cost fault finder project will let you find the faulty sensor without causing the complete alarm system to keep going off.