MARTINDALE MTL20 Test Lamp 

MTL20 Test Lamp is an essential safety aid for electricians

Test Lamp with Low Impedance Function

Maximum working voltage: 500VAC, 750DC Voltage ranges: 50, 120, 230, 400V AC/DC Range detection: automatically Response time:

The MTL20 is a dual impedance voltage indicator, designed to make it easy to differentiate between phantom voltages due to capacitive coupling and true hazardous voltages. In addition to all the features of the MTL10, the MTL20 incorporates two test buttons, one on the body of the unit and one on the probe. Simultaneous depression of both switches enables the unit to draw a high current and dissipate phantom voltages. In order to prevent this being done accidently, both buttons must be depressed to activate this feature. If there is any doubt as to whether a voltage indication is hazardous live or interference/phantom after using a dual impedance tester then alternative tests should also be performed.