Sealey VS925 Lambda Sensor Tester/Simulator

Tests Zirconia and Titania lambda sensors and ECU.
Suitable for 1, 2, 3 and 4 wire sensors, heated and unheated.
LED display shows crossover signal from sensor.
Simulates rich or lean mixture signals to check ECU response.
Insulation-piercing clip for quick and easy connection plus display to confirm wire identity.
Features a low battery indicator and powered by 9V battery (supplied).