This item is an on-engine protection device that monitors the engine's temperature. The SENDER (F90404) is a water temperature sender. It has a temperature range of 100 degree F to 220 degree F. It has resistance 100 degree F = 450 Ohms, 175 degree F = 99 Ohms, 250 degree F = 29.6 Ohms. This temperature sender is a 1/2 inch NPT thread standard. It assures product quality and durability for a long-lasting lifespan. The SENDER (F90404) can be applied to Faria American Resistance Style Temperature Gauges. The ohm range is the same as that of Faria Resistance Temperature Gauges. This temperature gauge serves as a universal sending unit for a wide range of gauges and instruments. This temperature sender's compatibility ensures its ease of use. Key Features: Water temperature sender It has a temperature range of 100 degree F to 220 degree F 1/2 inch NPT thread standard It can be applied to Faria American Resistance Style Temperature Gauges It has the same ohm range as Faria Resistance Temperature Gauges Serves as a universal sending unit for a wide range of gauges and instruments Specifications: Brand: Faria SKU: F90404 Weight: 0.10 LBS