The Optical Pickup is an IR optical sensor for solid-state meters. It uses edge triggering sensing for less sensitivity to change in ambient light conditions. Designed with the weakest pulses in mind, it can test all solid-state meters in any light condition.
Mounted with a suction cup, it is easy to install. On the top of the suction cup, there is a red LED that flashes when pulses are being sent by the meter. For some meters, a specific adapter is required.