The ShortPro Tool is a 24 volt system "short- finder". It'll keep the Tech from wasting a pocketful of fuses while trying to locate a control voltage short. A built-in automatically resetting circuit breaker turns on a bright red LED when tripped.
As the Tech removes the short, the breaker automatically resets, the LED goes out, and the circuit is restored. Lightweight and compact, with two 18" leads.