Martindale BZ101 (Buzz-It) 230V Socket Tester with Audible Buzzer

  • Quick & easy testing of socket wiring
  • Detects 28 fault conditions
  • Buzzer for instant pass indication
  • Three bright LEDs with clear & simple fault codes on the plug
  • Tough sculpted design for easy removal
  • Can be used as a basic fuse finder

EAN: 5036162183157 SKU: MARBZ101 Category: Tag:


The BZ101 provides a fast and simple solution for checking that 13A sockets are wired correctly. It uses the same LED indication as the CP501 but has the added benefit of an audible sounder to confirm that the wiring is correct.

This is particularly useful when checking sockets that are not easily visible or in difficult to access locations.

With the audible indication, the Buzz-It can also be used as a basic fuse finder, when the correct fuse is pulled the buzzer stops.

Detects 28 fault conditions



Operating voltage 230V
Frequency range 30-70Hz
Power consumption <3W
Temperature range -10 to 40°C at max, 60% RH
Supply from mains
Open Earth If Earth resistance >50kΩ nom at 230VAC nom
Open Neutral If Neutral resistance >50kΩ nom at 230VAC nom
Earth Leakage <5mA on a correctly wired socket
Complies with BS EN 61010-1
Dimensions 65 x 65 x 47mm