Martindale Buzz Socket Tester
Safe and simple to use, the BUZZ-IT (BZ101) is a real improvement for awkward sockets.
Thanks to the new BUZZ-IT, theres no more need for scrambling around, twisting your neck trying to see the lights.
It has an audible signal to tell you instantly whether or not the wiring is correct and can also be used as a fuse finder - the correct fuse is located when the buzzer stops!
If there is a problem the pattern of neon lights indicates the fault, similar to the Classic Check Plug.
Any result other than 3 indicators lit and a continuous buzzing tone shows a fault condition.