- Normally closed automotive engine thermostat switch sensor.
- Grounds or powers device upon ignition and turns off at 120'F.
- When temperature drops below 105'F the switch will re-close.
- Threads into engine block, radiator, manifold, water hose, etc.
- Measures temperature of any liquid, including motor oil.
- Also great for a cold start advance or winter engine heaters.
- Length from top of the probe threads to the tip is 0.5" inches.