Sensors

Sensors detect changes in your environment and send critical data to HVAC, plumbing, and electrical systems. These devices monitor temperature, pressure, flow, and more to keep systems running safely and efficiently. Choose from our wide selection of sensor types and sizes to get the monitoring solution you need today.

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Showing 1–48 of 4173 resultsSorted by popularity

Outdoor temperature sensor for T-32-P and UT32 thermostats

iO HVAC Controls

SKU: T-OTS

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Discharge Air Sensor for iO Zone Panels

iO HVAC Controls

SKU: ZPA-DTS

$20.28Add to Cart for Savings

iO HVAC Controls ZPA-DTS Discharge Air Sensor for All iO Zone Panels quantity
12:1 Ratio Handheld Infrared Laser Thermometer

MA-Line

SKU: MA-16550
$38.99
MSRP: $44.84
You save 13%
MA-Line MA-16550 12:1 Infrared Laser Thermometer quantity
Discharge Air Sensor for TrueZONE and RedLINK

Resideo

SKU: C7735A1000
$69.99
Honeywell C7735A1000 Discharge Air Sensor for TrueZONE and RedLINK quantity
Flush Mount Temperature Sensor, 300ft Max

Aprilaire

SKU: 8051
$27.99
MSRP: $32.19
You save 15%
Aprilaire 8051 Flush Mount Temperature Sensor, 300ft Max quantity
Wired outdoor/slab remote temperature sensor for Pro1 IAQ thermostats

Pro1 IAQ

SKU: R250S
$31.15
MSRP: $65.93
You save 53%
Pro1 R250S Wired Outdoor/Slab Temperature Sensor for T755S, T855SH, T855iSH quantity
Micronet Sensor Cover for Building Automation Systems

Schneider Electric

SKU: DCQC-150-SE
$10.21
MSRP: $11.74
You save 15%
Schneider Electric (Barber Colman) DCQC-150-SE Micronet Sensor Cover quantity
Water Sensor – Reliable Leak Detection for HVAC Systems

Rheem

SKU: 47-104184-01K
$12.25
MSRP: $14.09
You save 15%
Rheem 47-104184-01K Water Sensor – Reliable Leak Detection for HVAC Systems quantity
Wired indoor remote temperature sensor, up to 300 ft range

Pro1 IAQ

SKU: R251S
$38.99
MSRP: $60.23
You save 35%
PRO1 R251S Wired Indoor Remote Temperature Sensor for T755S, T855SH, T855iSH quantity
Micronet Sensor Setpoint & Override, No Cover

Schneider Electric

SKU: MN-S3-500
$388.89
MSRP: $452.81
You save 14%
Schneider Electric (Barber Colman) MN-S3-500 Micronet Sensor Setpoint & Override No Cover quantity
Zio Mini Wall Module, Sylk Bus, Configurable, 55-85°F

Honeywell Home

SKU: TR40
$58.58
MSRP: $67.37
You save 15%
Honeywell TR40 Zio Mini Wall Module, Sylk Bus, Configurable, 55-85°F quantity
High temperature sensor for select Aprilaire dehumidifier models

Aprilaire

SKU: 5456
$23.13
MSRP: $26.60
You save 13%
Aprilaire 5456 High Temperature Sensor for Models 1830, 1850, 1870, 8191 & 8192 quantity
Discharge Air Sensor for Z-2000

iO HVAC Controls

SKU: Z-2000-DAS

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Outdoor/Duct Mount Temperature Sensor with Automatic Control

Aprilaire

SKU: 8052
$8.55
MSRP: $9.83
You save 15%
Aprilaire 8052 Outdoor/Duct Mount Temperature Sensor quantity
Immersion Temperature Sensor, 10K NTC Thermistor, 4″ Probe, 1/2″ NPT

MAMAC

SKU: TE-703-C-12-A-3
$16.60
MSRP: $19.09
You save 15%
MAMAC Systems TE-703-C-12-A-3 Immersion Temperature Sensor, 10K NTC Thermistor quantity
Detect‑A‑Fire 450°F Heat Detector

Fenwal

SKU: 12-G27121-000-07
$372.65
MSRP: $428.55
You save 15%
Fenwal 12‑G27121‑000‑07 Detect‑A‑Fire 450°F Heat Detector quantity
Black Evaporator Thermistor – OEM HVAC Temperature Sensor

Amana-Goodman

SKU: 0130P00164
$4.91
MSRP: $5.65
You save 15%
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Indoor Temperature Sensor

GREE

SKU: 3900031302
$54.10
MSRP: $62.22
You save 15%
GREE 3900031302 Indoor Temperature Sensor quantity
Coil Temp. Sensor

Trane

SKU: SEN02853
$74.55
MSRP: $85.73
You save 15%
Trane SEN02853 Coil Temp. Sensor quantity
Honeywell C7660A1008/B Dry Bulb Temperature Sensor

Honeywell Home

SKU: C7660A1008/B
$37.99
MSRP: $43.69
You save 15%
Honeywell C7660A1008/B Dry Bulb Temperature Sensor quantity
Square rubber no-kink tubing for furnace air/pressure switches

Energy Saving Products (ESP)

SKU: SQAST-5
$13.38
MSRP: $15.39
You save 15%
ESP SQAST-5 Square Rubber No-Kink Air Switch Tubing for Furnace Pressure Switches quantity
Refrigerant Leakage Sensor for Mitsubishi Systems

Mitsubishi

SKU: MAC-100RS-E
$82.36
MSRP: $94.71
You save 15%
Read more
Detect‑A‑Fire 275°F Heat Detector

Fenwal

SKU: 12-F27121-000-10
$350.13
Fenwal 12‑F27121‑000‑10 Detect‑A‑Fire 275°F Heat Detector quantity
Sensor Overload Protector, 19.5/7.0 Amps

Daikin-McQuay

SKU: 668015806
$36.25
MSRP: $41.69
You save 15%
Daikin-McQuay 668015806 Sensor Overload Protector 19.5/7.0 Amps quantity
Zone Sensor Wall-Mount, After-Hours Override

Lennox

SKU: 56L80
$148.57
MSRP: $170.86
You save 15%
Lennox 56L80 Zone Sensor – Wall-Mount, After-Hours Override, Warmer/Cooler Lever quantity
TEMP SENSOR

GREE

SKU: 3900030901
$34.00
MSRP: $39.10
You save 15%
GREE 3900030901 Temperature Sensor quantity
Return air temperature sensor thermistor for Friedrich HVAC systems

Friedrich

SKU: 62600203
$24.99
MSRP: $39.51
You save 37%
Friedrich 62600203 Return Air Temperature Sensor White – Replacement Thermistor quantity
Suction Line Sensor

Trane

SKU: SEN03002
$31.99
MSRP: $36.79
You save 15%
Trane SEN03002 Suction Line Sensor quantity
Outdoor Air & Enthalpy Control Sensor

Carrier

SKU: HH57AC081
$99.99
MSRP: $114.99
You save 15%
Carrier HH57AC081 Outdoor Air & Enthalpy Control Sensor quantity
20K Ohm Nonlinear NTC Temperature Sensor

Honeywell Home

SKU: TR23
$89.29
MSRP: $102.68
You save 15%
Honeywell TR23 20K Ohm Nonlinear NTC Temperature Sensor quantity
Yellow Coil Temperature Sensor 43″

Trane

SKU: SEN03368
$124.01
MSRP: $142.61
You save 15%
Trane SEN03368 Yellow Coil Temperature Sensor 43" quantity
Honeywell C7776A1006 Duct Temperature Sensor

Honeywell Home

SKU: C7776A1006
$58.58
MSRP: $67.37
You save 15%
Honeywell C7776A1006 Duct Temperature Sensor quantity
Tekmar 086 Humidity & Temperature Sensor Flush Mount

Tekmar Control Systems

SKU: 086
$154.50
Tekmar 086 Humidity & Temperature Sensor Flush Mount quantity
Room Temperature Thermistor for Mitsubishi Systems

Mitsubishi

SKU: U01A01308
$4.96
MSRP: $5.70
You save 15%
Mitsubishi U01A01308 Room Temperature Thermistor quantity
Door Thermistor Replacement Part

General Electric (GE)

SKU: WS21X23195
$8.78
MSRP: $10.10
You save 15%
GE WS21X23195 Door Thermistor quantity
Room Temperature Sensor, 10K Ohm, Type 3, ETR500

Schneider Electric

SKU: ETR500
$21.60
MSRP: $24.84
You save 15%
Schneider Electric (Barber Colman) ETR500 Room Temperature Sensor, 10K Ohm, Type 3 quantity
OEM Coil Temperature Sensor for GE HVAC & AC Systems

General Electric (GE)

SKU: WJ26X24067
$16.99
MSRP: $19.54
You save 15%
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Zone Sensor with Set Point and 3‑Speed Fan

Trane

SKU: SEN1518
$195.96
MSRP: $225.35
You save 15%
Trane SEN1518 Zone Sensor with Set Point and 3‑Speed Fan quantity
Aprilaire 8057 Temperature Sensor

Aprilaire

SKU: 8057
$13.21
MSRP: $15.58
You save 15%
Aprilaire 8057 Temperature Sensor quantity
Maxitrol 01724601-001 Pakstat Sensor

Maxitrol

SKU: 01724601-001
$180.12
MSRP: $207.14
You save 15%
Maxitrol 01724601-001 Pakstat Sensor quantity
Ambient Temperature Thermistor for Mitsubishi Systems

Mitsubishi

SKU: U01A03308
$32.99
MSRP: $37.94
You save 15%
Mitsubishi U01A03308 Ambient Temp Thermistor quantity
Thermistor Assembly, OEM Replacement Part

Daikin-McQuay

SKU: 6015244
$29.99
MSRP: $34.49
You save 15%
Daikin-McQuay 6015244 Thermistor Assembly quantity
Remote Wall Mounted Air Sensor, SKU 111048103

Daikin-McQuay

SKU: 111048103
$202.39
MSRP: $232.75
You save 15%
Read more
Suction Transducer Kit with ±1.5% Accuracy & Mounting Bracket

Copeland

SKU: 929-0114-00
$206.78
MSRP: $237.80
You save 15%
Copeland 929-0114-00 Suction Transducer Kit quantity
TEMP SENSOR ASSY

GREE

SKU: 3900007301
$35.45
MSRP: $40.77
You save 15%
Read more
Detect-A-Fire Heat Detector Switch — 225 °F Vertical Mount Sensor

Fenwal

SKU: 12-E27120-022-05
$424.86
MSRP: $488.59
You save 15%
Fenwal 12-E27120-022-05 Detect-A-Fire Heat Detector Switch — 225 °F Vertical Mount Sensor quantity
TEMPERATURE SENSOR

Burnham Boiler

SKU: 106643-01
$46.19
MSRP: $53.12
You save 15%
Burnham 106643-01 Temperature Sensor quantity
Defrost and Ambient Sensor Kit – OEM Temperature Sensing for Heat Pump Defrost Control

Rheem

SKU: PD476604
$27.99
MSRP: $32.19
You save 15%
Rheem PD476604 Defrost and Ambient Sensor Kit – OEM Temperature Sensing for Heat Pump Defrost Control quantity

Sensors

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