Sensors Circuit Board

Caldera Hi-Limit sensor used on the Advent control systems from 2002 - current. This sensor is found mounted to your heater and detects high heat conditions to protect the heater from running dry or flow restrictions.  Found in Caldera, Utopia,...

OEM Caldera temperature sensor with 3/8" bulb. This sensor is normally found mounted into a sensor well and makes direct contact with the spa water. On the other end it plugs into the circuit board via the 4 pin, 2 wire JST plug. Found in Caldera,...

Temperature sensor for the Jacuzzi J-400 and J-1000 models from 2010 - current that uitilize the Nidec Spa pack that has the different colored rubber molded plugs, called a DSMT plug. This sensor has the typical hex head mount for the sensor and has a 8...

HydroQuip Temperature Sensor, 72" with 1/4" diameter temp probe. Common to find these used on the Versi Heaters and 9700 series spa controls. For SSPA, USPA, MP, 6200, 9200, 6500, 7500, 8500, 9500, 9700, 6330, 9330 series of spa packs and controls by...

Temperature Thermister, aka temp sensor for the Watkins made Solana and Hot Spot hot tubs from 2003 forward. This sensor has a 3/8" bulb and a two wire, four pin JST plug that connects to the circuit board. Its job is to communicate the temperature to...

This part is a Balboa Heater M7 Sensor with a 82" wire found in some HydroQuip Systems using Balboa Boards.  Sensor Application    Spa ControlSensor Type    Hi Limit, Temp or Hi Limit,...

This part is a Balboa Heater M7 Sensor with a 46" wire found in some HydroQuip Systems using Balboa Boards.  Sensor Application    Spa ControlSensor Type    Hi Limit, Temp or Hi Limit,...

This part is a Heater M7 Sensor with a 31" wire found in Jacuzzi Premium J series 2016 to current.  Note: This sensor does not have the nut and washer on it so it will only work with Jacuzzi Premium hot tubs..   Application Balboa...

Waterway NEO 2100 ETS Hi-Limit Sensor. These sometimes have 773-0377 on the part..   Spa Control Sensor Type Hi Limit Application Waterway Model ETS Connector Type 2 pin Wire Count 2 wire

Waterway NEO 2100 ETS (Electronic Thermal Sensing) Temperature Sensor. Similar to Balboa's M7™ Technology, the NEO 2100 uses (2) ETS sensors to determine the water temperature.     Sensor Application Spa Control Sensor...

Balboa no longer makes this sensor mount in gray. We now send the clear version This part is a GRAY Balboa Temperature Sensor Mount that accommodates 3/8” temperature sensors from Balboa, Gecko, Hydro Quip, and others. 1” hole size required...

This part is a Temperature and Hi-Limit Sensor that fits some ACC SmartTouch control systems there is one sensor bulb is 1/4" Diameter and it uses (2) 2-pin connectors.. Fits most ACC Smartouch and Epack control systems regardless of year.