Sealey-Lambda-Sensor-Tester-Simulator-Sealey-VS925-p-Tests-Zirconia-&-Titania-lambda-sensors-&-ECU-Suitable-for-one-two-three-&-four-wire-sensors-heated-&-unheated-LED-display-shows-crossover-signal-from-sensor-Simulates-rich-or-lean-mixture-signals-to-check-ECU-response-Insulation-piercing-clip-for-quick-&-easy-connection-plus-display-to-confirm-wire-identity-Features-a-low-battery-indicator-&-powered-by-9V-battery-supplied-p-div-table-tr-td-Model-No-td-td-VS92