(Davey) Optical Water Sensor/sp500 heater

Type of Product: SPA-QUIP SP500 MK1/MK2 OPTICAL WATER SENSOR(COARSE THREAD) Manufacturer: Spa Power Connections: Dimensions: Temperature Probe Diameter: Hi Limit Probe Diameter: Temp Cable Length: Hi Limit Cable Length: Commonly Used With: With davey heaters: SP500 heaters only Additional Notes: Do not use on any other davey heater