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.

Filter

Brand

Voltage

Brand

Voltage

Showing 1–48 of 997 resultsSorted by popularity

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

iO HVAC Controls

SKU: T-OTS

View Now
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
Discharge Air Sensor for TrueZONE and RedLINK

Resideo

SKU: C7735A1000
$69.84
Honeywell C7735A1000 Discharge Air Sensor for TrueZONE and RedLINK 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
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
Water Sensor – Reliable Leak Detection for HVAC Systems

Rheem

SKU: 47-104184-01K
$7.74
MSRP: $8.90
You save 15%
Rheem 47-104184-01K Water Sensor – Reliable Leak Detection for HVAC Systems quantity
O2 Electrochemical Replacement Smart Sensor, 0–25% Volume

QEL

SKU: 85930-916-000
$195.96
QEL 85930-916-000 O2 Electrochemical Replacement Smart Sensor, 0-25% Volume quantity
Wired indoor remote temperature sensor, up to 300 ft range

Pro1 IAQ

SKU: R251S
$25.60
PRO1 R251S Wired Indoor Remote Temperature Sensor for T755S, T855SH, T855iSH quantity
Wired outdoor/slab remote temperature sensor for Pro1 IAQ thermostats

Pro1 IAQ

SKU: R250S
$28.03
Pro1 R250S Wired Outdoor/Slab Temperature Sensor for T755S, T855SH, T855iSH quantity
Discharge Air Sensor for Z-2000

iO HVAC Controls

SKU: Z-2000-DAS

View Now
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
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
Honeywell C7660A1008/B Dry Bulb Temperature Sensor

Honeywell Home

SKU: C7660A1008/B
$23.80
MSRP: $35.19
You save 32%
Honeywell C7660A1008/B Dry Bulb Temperature Sensor quantity
Coil Temp. Sensor

Trane

SKU: SEN02853
$24.69
MSRP: $28.39
You save 15%
Trane SEN02853 Coil Temp. Sensor quantity
Zone Sensor Wall-Mount, After-Hours Override

Lennox

SKU: 56L80
$141.50
MSRP: $162.73
You save 15%
Lennox 56L80 Zone Sensor – Wall-Mount, After-Hours Override, Warmer/Cooler Lever quantity
Honeywell C7776A1006 Duct Temperature Sensor

Honeywell Home

SKU: C7776A1006
$58.58
MSRP: $67.37
You save 15%
Read more
Tekmar 086 Humidity & Temperature Sensor Flush Mount

Tekmar Control Systems

SKU: 086
$145.50
Tekmar 086 Humidity & Temperature Sensor Flush Mount quantity
Return air temperature sensor thermistor for Friedrich HVAC systems

Friedrich

SKU: 62600203
$11.76
MSRP: $39.51
You save 70%
Friedrich 62600203 Return Air Temperature Sensor White – Replacement 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
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
TEMPERATURE SENSOR

Burnham Boiler

SKU: 106643-01
$44.43
MSRP: $51.09
You save 15%
Burnham 106643-01 Temperature 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
Navien 30008571A Flow Sensor (T701-128R) – OEM Replacement for NPE-A Series Tankless Water Heaters

Navien

SKU: 30008571A
$42.63
MSRP: $49.02
You save 15%
Navien 30008571A Flow Sensor (T701-128R) – OEM Replacement for NPE-A Series Tankless Water Heaters quantity
Aprilaire 8057 Temperature Sensor

Aprilaire

SKU: 8057
$14.40
MSRP: $16.56
You save 15%
Aprilaire 8057 Temperature Sensor quantity
Honeywell TR40-H Temperature and Humidity Wall Module

Honeywell Home

SKU: TR40-H
$281.14
MSRP: $323.31
You save 15%
Honeywell TR40-H Temperature and Humidity Wall Module quantity
Maxitrol 01724601-001 Pakstat Sensor

Maxitrol

SKU: 01724601-001
$180.12
MSRP: $207.14
You save 15%
Maxitrol 01724601-001 Pakstat Sensor quantity
Waterflow Detector for 1″ to 2″ Pipe with 1″ NPT Connection

System Sensor

SKU: WFDTN
$166.30
MSRP: $191.25
You save 15%
System Sensor WFDTN Waterflow Detector for 1" to 2" Pipe with 1" NPT Connection quantity
Detect‑A‑Fire 190 °F Open/Rise Thermal Detector

Fenwal

SKU: 12-E27121-000-04
$396.19
MSRP: $455.62
You save 15%
Fenwal 12‑E27121‑000‑04 Detect‑A‑Fire 190 °F Open/Rise Thermal Detector quantity
Flame Sensor – Reliable Furnace Flame Detection Replacement

Armstrong Furnace

SKU: R46895-001
$11.65
MSRP: $13.40
You save 15%
Armstrong R46895-001 Flame Sensor – Reliable Furnace Flame Detection Replacement quantity
Danfoss 060G1037 AKS 32R Pressure Sensor – Reliable 4–20mA Transmitter for HVAC and Refrigeration Systems

Danfoss

SKU: 060G1037
$203.96
MSRP: $322.35
You save 37%
Danfoss 060G1037 AKS 32R Pressure Sensor – Reliable 4–20mA Transmitter for HVAC and Refrigeration Systems quantity
Honeywell FSP-951 Photelectric Smoke Detector

Honeywell Home

SKU: FSP-951
$204.75
MSRP: $235.46
You save 13%
Honeywell FSP-951 Photelectric Smoke Detector quantity
Current Transducer

Veris

SKU: H-922
$81.05
MSRP: $93.21
You save 15%
Veris H-922 Current Transducer quantity
Discharge Air Sensor

Honeywell Home

SKU: EP-DAS
$24.99
Read more
Industrial RTD Probe Temperature Sensor for Burner Management Systems

Fireye

SKU: TS-350-4
$1,160.53
MSRP: $1,334.61
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
Direct Mount Setpoint Controller with Integrated Remote Sensor

Resideo

SKU: T100F1395
$64.58
MSRP: $74.27
You save 15%
Read more
Temperature Sensor for Gas & Oil Boilers

Burnham Boiler

SKU: 106495-02
$126.48
MSRP: $145.45
You save 15%
Burnham 106495-02 Temperature Sensor for Gas & Oil Boilers quantity
Indoor Temperature Sensor

GREE

SKU: 3900031302
$27.45
MSRP: $31.57
You save 13%
GREE 3900031302 Indoor Temperature Sensor quantity
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
Detect-A-Fire Heat Detector — 190 °F Overheat

Fenwal

SKU: 27121-20-190
$424.86
MSRP: $488.59
You save 15%
Fenwal 27121-20-190 Detect-A-Fire Heat Detector — 190 °F Overheat quantity
Detect‑A‑Fire 325°F Heat Detector

Fenwal

SKU: 12-F28021-005-06
$464.79
MSRP: $534.51
You save 15%
Fenwal 12‑F28021‑005‑06 Detect‑A‑Fire 325°F Heat Detector quantity
Detect‑A‑Fire 275°F Heat Detector

Fenwal

SKU: 12-F27121-000-10
$350.13
MSRP: $402.65
You save 15%
Fenwal 12‑F27121‑000‑10 Detect‑A‑Fire 275°F Heat Detector quantity
Flame Sensor – Reliable Furnace Ignition Component

Rheem

SKU: 62-23543-08K
$8.84
MSRP: $10.17
You save 13%
Rheem 62-23543-08K Flame Sensor – Reliable Furnace Ignition Component quantity
Flame Sensor

York

SKU: S1-025-30802-000
$35.15
MSRP: $40.42
You save 15%
Read more
Enter/Leaving Water Temperature Sensor

York

SKU: 025-53145-000
$212.50
MSRP: $244.38
You save 15%
Read more
Flame Sensor

Burnham Boiler

SKU: 105880-01
$40.88
MSRP: $47.01
You save 15%
Burnham Boiler 105880-01 Flame Sensor quantity
Flame Sensor Rod, 90 Degree Bend

York

SKU: S1-2702-311P
$31.83
MSRP: $36.60
You save 15%
Read more