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Sensors & Probes

Flow and Temperature Sensors to fit various Spa Packs on your Hot Tub or Spa.

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Extended 1 Year Warranty

In addition to the manufacturers standard warranty (usually 1 year) we also offer the opportunity for you to extend this warranty by a further 1 year for a one off fee. This can be arranged at the point of purchase or within a limited time afterwards.
An extended warranty is an easy way to protect your purchase, against any manufacturing defects causing breakdown. You will benefit from free repairs for the term of the warranty period & If your equipment can't be repaired then we will replace it free of charge.(A delivery surcharge may apply for non UK mainland addresses)
This warranty and the standard manufacturer’s warranty does not cover general wear and tear, abuse or misuse or incorrect installation.
If you would like any further information on our extended warranty scheme please call our Hydrospares team on 01326 371 488 OR email us at info@hydrospares.co.uk

COMPARE ACC - Temp/Hi-Limit Dual Sensor
ACC - Temp/Hi-Limit Dual Sensor
Dual Purpose
  • ACC
  • Temp/Hi-Limit
  • 12" Cable
  • 1/4" Bulb
ACC
ACC
Temp/Hi-Limit
Dual Sensor
12" Cable
£159.06 (Inc VAT)
QF: 9436
12 In StockSame day dispatch if ordered by 14:00
9436
COMPARE Astrel EasyMini Plus Spa Pack - Hi-Limit Sensor
Astrel EasyMini Plus Spa Pack - Hi-Limit Sensor
PG Connector
  • Hi-Limit Sensor
  • PG Connector
  • For the EasyMini or
  • EasyMini Plus Spa Packs.
Astrel
Astrel / Modo
Hi-Limit
For Easymini & Easymini Plus
PG Connector
£27.99 (Inc VAT)
QF: 5941
1 In StockSame day dispatch if ordered by 14:00
5941
COMPARE Astrel EasyMini Plus Spa Pack - Temperature Sensor
Astrel EasyMini Plus Spa Pack - Temperature Sensor
PG Connector
  • Temperature Sensor
  • PG Connector
  • For the Easy Mini or
  • Easy Mini Plus Spa Packs.
Astrel
Astrel / Modo
Temp Sensor
For Easymini & Easymini Plus
PG Connector
£42.99 (Inc VAT)
QF: 5940
1 In StockSame day dispatch if ordered by 14:00
5940
COMPARE Balboa M7 Sensor - Long (60cm/24")
Balboa M7 Sensor - Long (60cm/24")
M7/GL Spa Packs
  • Balboa M7 Sensor
  • 60cm Cable
Balboa Water Group
Balboa
24" Cable
Includes Nut & Washer
Replacement Part
£28.99 (Inc VAT)
QF: SEN-0288
RRP: £32.21
34 In StockSame day dispatch if ordered by 14:00
SEN-0288

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COMPARE Balboa M7 Sensor - Short (30cm/12")
Balboa M7 Sensor - Short (30cm/12")
GS/GL Spa Packs
  • Balboa M7 Sensor
  • 30cm Cable Length
  • Suitable for GS/GL Spa Packs
Balboa Water Group
Balboa
12" Cable
Includes Nut & Washer
Replacement Part
£28.31 (Inc VAT)
QF: SEN-4905
RRP: £29.80
6 In StockSame day dispatch if ordered by 14:00
SEN-4905

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COMPARE Balboa M7 Sensor Retaining Nut
Balboa M7 Sensor Retaining Nut
Found on Heater Tube
  • OEM
  • For M7 Sensors
  • Replacement
Balboa Water Group
Balboa
For M7 Sensors
OEM
Replacement Part
£9.44 (Inc VAT)
QF: 3842
RRP: £10.49
2 In StockSame day dispatch if ordered by 14:00
3842

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COMPARE Gecko Hi Limit Sensor - M-Class JST
Gecko Hi Limit Sensor - M-Class JST
For MSPA Control Systems
  • Gecko 
  • Hi Limit Sensor
  • Suitable for M-Class JST
  • MSPA control systems.
Gecko
Gecko
Hi-Limit Sensor
MSPA control systems
Replacement Part
£29.49 (Inc VAT)
QF: 5485
RRP: £36.50
5 In StockSame day dispatch if ordered by 14:00
5485
COMPARE Gecko Hi Limit Sensor - S-Class JST
Gecko Hi Limit Sensor - S-Class JST
For S-Class Systems
  • Gecko 
  • Hi Limit Sensor
  • Suitable for S-Class JST
  • For S-Class Control Systems.
Gecko
Gecko
Hi-Limit Sensor
For S-Class Systems
Replacement Part
£28.99 (Inc VAT)
QF: 5484
RRP: £36.15
2 In StockSame day dispatch if ordered by 14:00
5484
COMPARE Gecko Temperature Sensor
Gecko Temperature Sensor
For S-Class (SSPA-1 and SSPA-2) and MSPA-MP Control Systems.
  •  Gecko 
  • Temperature Sensor
  • 2 Wire
  • 4 Pin Connector
Gecko
Gecko
4 Pin Connector
For S-Class & MSPA-MP Control Systems.
Replacement Part
£51.99 (Inc VAT)
QF: 6023
RRP: £63.04
3 In StockSame day dispatch if ordered by 14:00
6023
COMPARE ON OFFER HydroAir Thermosensor
HydroAir Thermosensor
3/8" OD Stainless Steel Well
  • HydroAir Thermosensor
  • 3/8" OD Stainless Steel Well
  • Ingress Prot. Front: IPx8
  • Ingress Frot. Back: IPx5
Balboa Water Group
Available while stock lasts
3/8"
separate heater outlet
stainless steel
£49.99 (Inc VAT)
QF: 1170
RRP: £68.54
1 In StockSame day dispatch if ordered by 14:00
1170
COMPARE HydroAir Water Level sensor
HydroAir Water Level sensor
5v JST style snap-on connector
  • HydroAir Water Level Sensor
  • 5v JST
  • Style snap-on connector
  • Fits Classic line boxes
HydroAir
£38.97 (Inc VAT)
QF: SEN-1656
RRP: £41.02
9 In StockSame day dispatch if ordered by 14:00
SEN-1656
COMPARE HydroQuip 3/4" Barb Kit with O-Rings
HydroQuip 3/4" Barb Kit with O-Rings
Fits Watkins Double Barrel Heater (No Fault Heater)
  • 3/4" Barb Kit 
  • O-Rings
  • Fits Watkins Double Barrel Heater
HydroQuip
HydroQuip
3/4" Barb
O-Rings
Replacement Kit
£23.18 (Inc VAT)
QF: 8671
RRP: £25.76
2 In StockSame day dispatch if ordered by 14:00
8671
COMPARE HydroQuip Hi-Limit Sensor - Post 2002 - Blue
HydroQuip Hi-Limit Sensor - Post 2002 - Blue
Used on Watkins / Hot Spring Spas
  • HydroQuip Hi Limit Sensor Post 2002
  • MPN: RME-36602
  • 52" (Blue)
  • Used with: Watkins Mfg/Hot Spring Spas [IQ2020]
Therm Products
HydroQuip
52"
Post 2002
Replacement and Spare
£48.99 (Inc VAT)
QF: 6392
RRP: £65.02
2 In StockSame day dispatch if ordered by 14:00
6392
COMPARE HydroQuip Hi-Limit Sensor - Post 2002 - Red
HydroQuip Hi-Limit Sensor - Post 2002 - Red
Used on Watkins / Hot Spring Spas
  • HydroQuip 
  • Hi Limit Sensor 
  • Post 2002
  • 52" (Red)
Therm Products
HydroQuip
Hi-Limit
Watkins / Hot Spring Spas Post 2002
Replacement PArt
£48.99 (Inc VAT)
QF: 6390
RRP: £65.02
3 In StockSame day dispatch if ordered by 14:00
6390
COMPARE HydroQuip Hi-Limit Sensor - Pre 2002 - Blue
HydroQuip Hi-Limit Sensor - Pre 2002 - Blue
Used on Watkins / Hot Spring Spas
  • HydroQuip Hi-Limit Sensor Pre 2002
  • 52" (blue)
  • AMP connection
  • Used with: Watkins Mfg/Hot Spring Spas [IQ2000]
HydroQuip
HydroQuip
52"
Pre 2002
Replacement or Spare
£48.99 (Inc VAT)
QF: 6393
RRP: £65.02
4 In StockSame day dispatch if ordered by 14:00
6393
COMPARE HydroQuip Hi-Limit Sensor - Pre 2002 - Red
HydroQuip Hi-Limit Sensor - Pre 2002 - Red
Used on Watkins / Hot Spring Spas
  • HydroQuip 
  • Hi Limit Sensor 
  • Pre 2002
  • 52" (Red)
  • AMP connection
Therm Products
HydroQuip
Hi-Limit
WATKINS / HOT SPRING SPAS Pre 2002
Replacement Part
£48.99 (Inc VAT)
QF: 6391
RRP: £65.02
4 In StockSame day dispatch if ordered by 14:00
6391
COMPARE HydroQuip Sensor Replacement Kit
HydroQuip Sensor Replacement Kit
Hi-Limit Sensor, Temperature Sensor & O-Rings
  • HydroQuip 
  • Replacement Kit
  • For Waktins Heater
HydroQuip
HydroQuip
Hi-Limit, Temp Sensors & O-Rings
For Watkins No Fault Heater
Replacement Kit
£67.36 (Inc VAT)
QF: 8669
RRP: £74.84
3 In StockSame day dispatch if ordered by 14:00
8669
COMPARE Koller Mounting Body for Temperature Sensor
Koller Mounting Body for Temperature Sensor
Nickel Plated
  • Koller Mounting Body
  • Length: 35mm
  • Hole Size: 16mm
  • For Temperature Sensor
Koller
Koller
35mm
16mm Hole
Nickel Plated
£15.49 (Inc VAT)
QF: 2814
4 In StockSame day dispatch if ordered by 14:00
2814
COMPARE Koller Temperature Sensor
Koller Temperature Sensor
2.5m Cable
  • Koller 
  • Temperature Sensor
  • 2.5m Cable 
  • IP 68
Koller
Koller
Temp Sensor
2.5m Cable
Replacement Part
£39.99 (Inc VAT)
QF: 2813
3 In StockSame day dispatch if ordered by 14:00
2813
COMPARE Spa-Quip / Davey In Pool Temperature Sensor
Spa-Quip / Davey In Pool Temperature Sensor
Compatible with SP601, SP800, SP1200
  • SpaQuip / Davey 
  • In Pool Temperature Sensor
  • For SP601, SP800, SP1200
  • Cable: 10m
Davey/Spa-Quip
Spa-Quip / Davey
In Pool Temperature Sensor
Works with SP601, SP800, SP1200
Replacement PArt
£61.99 (Inc VAT)
QF: 6199
RRP: £88.39
3 In StockSame day dispatch if ordered by 14:00
6199
COMPARE Temperature Sensor - For Sundance Spas
Temperature Sensor - For Sundance Spas
With Box End Connector 800
  • Temperature Sensor
  • 12' Cable
  • Suitable for Sundance Spas
SUNDANCEĀ® SPAS
Sundance Spas
Temp Sensor
12ft Cable
Replacement PArt
£69.49 (Inc VAT)
QF: 8551
RRP: £99.64
2 In StockSame day dispatch if ordered by 14:00
8551
COMPARE Waterway Mini Thermowell
Waterway Mini Thermowell
Fits 5/16" Sensors
  • Waterway 
  • Mini Thermowell
  • Fits 5/16" Sensors
  • Mounting Hole 28mm
Waterway
Waterway
Mini Thermowell
Fits 5/16" Sensors
Replacement or Spare
£13.20 (Inc VAT)
QF: 4417
RRP: £15.60
3 In StockSame day dispatch if ordered by 14:00
4417
COMPARE Waterway Thermowell - 90° Elbow - 1 ½"
Waterway Thermowell - 90° Elbow - 1 ½"
White
  • Waterway Thermowell
  • 90° Elbow
  • 1 ½" x 1 ½" Socket
  • White PVC
Waterway
Waterway
90° Elbow
1 ½" x 1 ½" Socket
Replacement Part
£9.99 (Inc VAT)
QF: 7137
RRP: £13.66
10 In StockSame day dispatch if ordered by 14:00
7137
COMPARE Watkins Hi Limit Temperature Sensor
Watkins Hi Limit Temperature Sensor
Used IQ2020 Systems
  • Watkins
  • Hi-Limit
  • 36" Cable
  • Used on IQ2020 Systems
Watkins
Hi-Limit
36" Cable
Replacement Part
£63.80 (Inc VAT)
QF: 7882
RRP: £85.07
1 In StockSame day dispatch if ordered by 14:00
7882
COMPARE Watkins Temperature Sensor
Watkins Temperature Sensor
For IQ2000 Systems
  • Watkins
  • Temp Sensor
  • 36" Cable
  • Used on IQ2000 Systems
Watkins
Temp
36" Cable
Replacement PArt
£57.60 (Inc VAT)
QF: 7883
RRP: £85.07
2 In StockSame day dispatch if ordered by 14:00
7883
COMPARE Balboa Temperature & Hi-limit Sensors
Balboa Temperature & Hi-limit Sensors
Pre M7 Spa Packs
  • Balboa
  • Hi-Limit & Temp
  • Pre-M7
  • Used By Many Brands
Balboa Water Group
Balboa
Pre M7 System
Temp & High Limit
Pressure Switch systems
£27.62 (Inc VAT)
QF: SEN-0287
RRP: £29.08
Special Order ItemLead time to be confirmed
SEN-0287
COMPARE Balboa Temperature Sensor
Balboa Temperature Sensor
For M7 Spa Packs
  • Balboa
  • Temp Sensor
  • For M7 Spa Packs
  • Cable length 2.4m
Balboa Water Group
Balboa
M7 Temp Sensor
Value & LE Systems
Replacement or SPare
£31.93 (Inc VAT)
QF: SEN-6385
RRP: £33.61
Special Order ItemLead time to be confirmed
SEN-6385
COMPARE Ethink KL8 Temperature Sensor
Ethink KL8 Temperature Sensor
For Ethink KL8 Control Boxes
  • Ethink 
  • Temperature Sensor
  • For KL8 Control Boxes
  • Mounts into the Wall of Spa
Ethink KL8
Temp Sensor
For KL8 Control Boxes
Mount to Spa Wall
£49.99 (Inc VAT)
QF: 9594
Out of Stock - Available to Pre-OrderEstimated dispatch: 5 days
9594
COMPARE Gecko Hi Limit Sensor / Probe
Gecko Hi Limit Sensor / Probe
For use with SSPA / MSPA-MP Control Packs
  • Gecko
  • Hi-Limit
  • For S-Class
  • Replaces Various Probes
Gecko
Gecko
High Limit Sensor / Probe
For S-Class Spa Packs
Replaces Various Probes
£35.89 (Inc VAT)
QF: 7846
RRP: £53.95
Special Order ItemLead time to be confirmed
7846
COMPARE Gecko Temperature Sensor - 3 Wire
Gecko Temperature Sensor - 3 Wire
For S-Class Systems
  • Gecko 
  • Temperature Sensor
  • 3 Wire
  • Cable 2.5m
Gecko
Gecko
Temperature Sensor
3 Wire
Replacement Part
£49.99 (Inc VAT)
QF: 6031
RRP: £64.55
Special Order ItemLead time to be confirmed
6031
COMPARE HydroAir Water Level Sensor
HydroAir Water Level Sensor
12v - 25-0211-12
  • HydroAir Water Level Sensor
  • 12v - 25-0211-12
  • Fits classic line variable boxes
HydroAir
12V
Adjustable Sensitivity
Now Grey with Plug
3-10mm Wall Thickness
£39.00 (Inc VAT)
QF: SEN-1655
RRP: £41.05
Special Order ItemLead time to be confirmed
SEN-1655
COMPARE Hydro Pro 13 Heat Pump Temperature Sensors
Hydro Pro 13 Heat Pump Temperature Sensors
Replacement Parts
  • Replacement Temperature Sensors
  • Water In/Out/Pipe/Ambient Options
  • For Hydro-13 Pump
Water In / Water Out Temps
Pipe / Ambient Temps
Replacement Sensors
For Hydro Pro 13 Pump
From £17.99 (Inc VAT)
QF: SEN-9687
RRP: £19.99
Out of Stock - Available to Pre-OrderEstimated dispatch: 20 days
SEN-9687
COMPARE Koller Water Level Sensor - For Polyester Tubs
Koller Water Level Sensor - For Polyester Tubs
9 - 30V DC
  • Koller Water Level Sensor
  • For Polyester Tubs
  • Free Cable End 1.6 m
  • 9 - 30V DC
Koller
£38.49 (Inc VAT)
QF: 3752
RRP: £47.62
Special Order ItemLead time to be confirmed
3752
COMPARE Koller Water Level Sensor - For Polyester Tubs
Koller Water Level Sensor - For Polyester Tubs
9 - 30V DC
  • Koller Water Level Sensor
  • For Polyester Tubs
  • Free Cable End 2.6 m
  • 9 - 30V DC
Koller
£38.99 (Inc VAT)
QF: 8726
RRP: £48.44
Special Order ItemLead time to be confirmed
8726
COMPARE Spa-Quip Auto Reset Klixon
Spa-Quip Auto Reset Klixon
For All Spa-Quip Heaters
  • Spa-Quip 
  • Auto Reset
  • Suitable for All Spa-Quip Heaters
Davey/Spa-Quip
Spa-quip/Davey
Auto Reset
For All Spa-Quip Heaters
Replacement Part
£5.49 (Inc VAT)
QF: 6201
RRP: £5.92
Special Order ItemLead time to be confirmed
6201
COMPARE SpaNet - Heater Sensor Assembly Complete
SpaNet - Heater Sensor Assembly Complete
V2 Model
  • Fits all V1 and V2 models
  • Comes with clear plastic housing and O-Ring
  • Suits SV series heater tubes
fits all v1 & v2 models
includes clear plasting housing & o-ring
suits sv series meter tubes
spare part
£54.44 (Inc VAT)
QF: 10191
Special Order ItemLead time to be confirmed
10191
COMPARE Universal Water Level sensor
Universal Water Level sensor
4.5-30v JST style snap-on connector
  • Universal Water Level sensor 
  • 4.5-30v JST
  • Style Snap-On Connector
HydroAir
£54.40 (Inc VAT)
QF: SEN-1657
RRP: £57.26
Special Order ItemLead time to be confirmed
SEN-1657
COMPARE Vita Spa Sensor - Hi-Limit
Vita Spa Sensor - Hi-Limit
Short Cable
  • For Vita Spas
  • Hi-Limit
  • Short Cable
  • Used Between 2000 and 2009
Vita Spas
For Vita Spas
Hi-Limit
USED BETWEEN 2000 AND 2009
Replacement Part
£30.00 (Inc VAT)
QF: 6419
RRP: £39.99
Special Order ItemLead time to be confirmed
6419
COMPARE Vita Spa Sensor - Temperature
Vita Spa Sensor - Temperature
Long Cable
  • For Vita Spas
  • Temperature
  • Long Cable
  • Used Between 2000 and 2009
Vita Spas
For Vita Spas
Temperature
Used Between 2000 and 2009
Replacement Part
£30.00 (Inc VAT)
QF: 6418
RRP: £39.99
Special Order ItemLead time to be confirmed
6418
COMPARE Temperature Sensor - For Sundance Spas
Temperature Sensor - For Sundance Spas
With Curled Finger Connector Sweetwater
  • Temperature Sensor
  • 12' Cable
  • Suitable for Sundance Spas
SUNDANCEĀ® SPAS
Sundance Spas
Temp Sensor
12ft cable
Replacement Part
£73.49 (Inc VAT)
QF: 8552
RRP: £92.89
Special Order ItemLead time to be confirmed
8552
COMPARE Jacuzzi Temperature Sensor - J-400
Jacuzzi Temperature Sensor - J-400
12' Cable with DSMT Plug
  • Temperature Sensor
  • 2010 to Present
  • 12' Cable
  • DSMT x Hex Bulb
Jacuzzi
Jacuzzi
DSMT Plug
12' Cable
2010 to Present
£75.49 (Inc VAT)
QF: 10055
Out of Stock Lead time to be confirmed
10055
COMPARE Pressure Sensor / Transmitter - Voltage Output
Pressure Sensor / Transmitter - Voltage Output
0 Bar Min / 0.1 Bar Max
  • Turn Pressure into Signal/Voltage
  • Air, Water and Gases
  • Various Applications
  • 0.1 Bar Max.
0 Bar Min
0.1 Bar Max
Use with air, water & gases
Piezo-resistive silicon sensor
£478.80 (Inc VAT)
QF: 10735
RRP: £598.80
Out of Stock Lead time to be confirmed
10735
 
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