Hot Tub Compatible With Watkins Spas Thermistor High Limit 73992. This newly designed high limit thermistor places the original black plastic tipped version. It is a safety device that will shut down power to the spa if the water temperature exiting the heater is too hot. This would indicate a "low water flow" condition. Secondly, if this sensor is faulty then the spa can shut down requiring you to shut off power to the spa, then re-establish power in order to reset the unit. 

• You Will Receive One Item
• Hot Tub Compatible With Watkins Spas
• Compatible with Solana Spas 2006-current models
• Compatible with Hot Spot 2006-current models
• This thermistor is for 2006-now models
• Compatible With Hot Spot spa models (except Sprint & Dash) 
• Compatible With Solana spa all 2006-forward models