Hot Tub Sensors

Digital and mechanical sensors and parts for all major brand hot tubs.

All orders over $34.99 ship free in the US

(image for) Balboa 50' Hi-Limit Sensor

Balboa 50' Hi-Limit Sensor

Balboa Hi-Limit Sensor with 1/4" Bulb Length: 50'

$120.06
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(image for) Balboa 96" Sensor Assembly

Balboa 96" Sensor Assembly

Balboa Temperature and Hi-Limit Sensor Assembly Dimensions: 1-1/2" Bulb Length, 1/4" Diameter (Hi-Limit) 2" Bulb Length, 3/8"...

$66.46
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(image for) Balboa Hi-Limit and Temperature Sensor Assembly

Balboa Hi-Limit and Temperature Sensor Assembly

Balboa Hi-Limit and Temperature Sensor Assembly   Dimensions: 1-1/2" Bulb Length, 1/4" Diameter (Hi-Limit) 2" Bulb Length,...

$150.00
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(image for) Balboa ORP Sensor

Balboa ORP Sensor

Balboa ORP Sensor, to be used with Balboa pH/ORP Sensor Kit model 54129

$339.94
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(image for) Balboa pH/ORP Sensor Kit

Balboa pH/ORP Sensor Kit

pH/ORP Sensor Kit for Balboa M2, M3, and M7 EL systems   Kit does NOT include ORP Sensor 30315

$301.66
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(image for) Balboa Tape-on Sensor

Balboa Tape-on Sensor

Balboa Hi-Limit and Temperature Tape-on Sensor Sensor tapes directly onto heater manifold

$48.00
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(image for) Flow Switch Grid Control M-1

Flow Switch Grid Control M-1

Manufacturer: Grid Controls Flow Switch Application: Dimension One Model: M-1 Plumbing Connection Size: 1-1/2" Plumbing...

$149.95
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(image for) Flow Switch Grid Control M-225

Flow Switch Grid Control M-225

Manufacturer: Grid Controls Flow Switch Application: Cal-Spas Model: M-225 Plumbing Connection Size: 2" Plumbing Connection...

$189.95
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(image for) Flow Switch Marquis 850-9039

Flow Switch Marquis 850-9039

Q-12DS50 Flow switch used on Marquis spas.   3/4" slip tee with 1/2 threaded flow switch

$115.96
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(image for) Flow Switch Universal

Flow Switch Universal

  This common flow switch is Identical to and replaces:  HRWQ12DS1   Q12DS1.54SNO1   Q12DS501.54SNO1   608073 ...

$69.95
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(image for) Flow Switch Watkins 34875

Flow Switch Watkins 34875

Watkins Hot Springs Flow Switch

$66.18
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(image for) Hi Limit Mechanical

Hi Limit Mechanical

 This mechanical Hi Limit sensor is commonly used in air switch controls to re-set the heater. Available in: 275-2662-00 12" Capillary...

$39.95
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(image for) Hi Limit Surface Mount

Hi Limit Surface Mount

The surface-mounted Hi Limit is commonly used on 5x5 Plate-Style Heaters.

$39.95
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(image for) Hydro-Quip Hi-Limit Sensor

Hydro-Quip Hi-Limit Sensor

18" HydroQuip - Gecko two pin style high limit sensor.

$41.02
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(image for) Hydro-Quip Hi-Limit Sensor (Old Style)

Hydro-Quip Hi-Limit Sensor (Old Style)

     Hydro-Quip Hi-Limit Sensor (Old Style) 4 Pin connector with blind 4th position.  

$50.22
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(image for) Hydro-Quip Temperature Sensor

Hydro-Quip Temperature Sensor

Temperature Sensor with 5/16" diameter bulb

$39.62
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(image for) Hydro-Quip Temperature Sensor (Old Style)

Hydro-Quip Temperature Sensor (Old Style)

Hydro-Quip Temp Sensor (Old Style) 3/8" bulb with 10' cord Blocked off number 4 pin

$83.22
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(image for) Jacuzzi Current Model Sensors

Jacuzzi Current Model Sensors

Temperature and Hi Limit Sensors for current model Jacuzzi J-300 Series Spas Built from 2002 to 2016. 6600-167 Temp Sensor with box end connector for...

$27.00
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(image for) Jacuzzi Flow Switch for J-300 Systems

Jacuzzi Flow Switch for J-300 Systems

Jacuzzi Flow Switches used in J-300 Series Hot Tubs from 2002+ Which Switch Do I Need  J-300 Series LCD models (All models with 10 button LCD...

$48.32
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(image for) Len Gordon Pressure Switch

Len Gordon Pressure Switch

  There are three common versions of this pressure switch that are often used in Balboa control boxes: 800120-3 25A SPDT 1/8" NPT...

$19.95
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(image for) Pressure Switch DTec 510ADO167

Pressure Switch DTec 510ADO167

Dtec-1 has a smaller foot print, is universal and easy to install, shares same set point with other models and can be used to replace them. 

$39.95
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(image for) Pressure Switch Tridelta Tecmark 3903

Pressure Switch Tridelta Tecmark 3903

Manufacturer: Tridelta/Tecmark 3903 Switch Type: Pressure Pressure Switch Rating: 1 to 5 psi Pressure Switch Amperage: 1A...

$29.95
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(image for) Pressure Switch Tridelta Tecmark 4010P

Pressure Switch Tridelta Tecmark 4010P

Manufacturer: Tridelta/Tecmark 4010P Switch Type: Pressure Pressure Switch Rating: 1 to 5 psi Pressure Switch Amperage: 25A...

$29.95
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(image for) Pressure Switch Tridelta Tecmark 4015P

Pressure Switch Tridelta Tecmark 4015P

Manufacturer: Tridelta/Tecmark 4015P Switch Type: Pressure Pressure Switch Rating: 1 to 5 psi Pressure Switch Amperage: 25A...

$32.95
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(image for) Sensor Balboa Hi Limit M7 53605

Sensor Balboa Hi Limit M7 53605

Sensor Application: Spa Control Sensor Type: Temp or Hi Limit Application: Balboa Water Group Model: M7 53605 Connector...

$49.95
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(image for) Sensor Caldera Hi Limit 72492

Sensor Caldera Hi Limit 72492

Hi limit thermistor for advent control systems found on Caldera spas from 2002 to current. 2 pin connector 1/4" bulb.

$34.50
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(image for) Sensor Caldera Thermostat 72493

Sensor Caldera Thermostat 72493

Hi limit thermistor for advent control systems found on Caldera spas from 2002 to current. 2 pin connector 1/4" bulb

$34.50
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(image for) Sensor Watkins Hi Limit 38416 Old Style

Sensor Watkins Hi Limit 38416 Old Style

High limit thermistor ("Limit Therm") used on Hot Spring and Tiger River spas from 1995 - 2002.  Connects to the outside of the...

$34.50
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(image for) Sensor Watkins Thermostat 38415 Old Style

Sensor Watkins Thermostat 38415 Old Style

Control thermistor ("Reg Therm") used on Hot Spring and Tiger River spas from 1995 - 2002.  Connects to the outside of the control box.

$34.50
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