An electrical water temperature gauge featuring a 90 degree air core movement to give the accuracy and reliability you come to expect from a Stack product. The white LED back light and illuminated needle ensure readability in all lighting conditions. With only a 3 wire connection and no bulky connectors at the back of the gauge, fitting is straight forward in even the tightest of spaces.Accurate and reliable 90 degree air core movementWhite LED back light and illuminated needle for excellent night time visibilitySender unit included52mm Gauge diameterStack electrical water temperature gauges are supplied with a sender unit. Gauges with a °C scale include a sender with an M10 x 1 male thread (part number ST262256) and those with a °F scale include a sender with a 1/8" NPT male thread (part number (ST262258). Adaptors for other thread types are available to purchase separately.