Digital test panel to test voltage and current. For surface or recessed mounting. Equipped with back frame. Display: 3 figures at 7 segments. Voltage or current displayed by pressing button. Automatic switch-off at a set time after system check (low consumption mode). Dimensions: 11.5cm x 8cm approx. Equipped with a 2.5M cable. Connection to the regulator by means of an RJ11 phone plug.