Sealey 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).