With the aid of this test module it is possible to carry out tests with all types of light emitting diodes in order to check function brightness colour and polarity. The LEDs can be tested with different currents approx. 1mA 2.5mA 5mA 10mA 20mA and 50mA. In order to facilitate selection of LEDs of equal brightness two test sockets with the same current 10mA have been placed side by side.Requires 1x9V PP3 battery Order Code L46AL.