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12,748 Results
SS2 style Low Voltage Condensate Safety Switch 3/4 PVC Float Switch DIY/HVAC
$18.00Free shipping71 soldTrane SEN02076 Reliatel Non-Programmable Wired Display Zone Sensor
$39.99Free shipping302 soldDistech Controls TS-RMPX- Temperature Sensor, Stainless Steel Plate, Brand New!!
$19.95or Best Offer$6.95 shippingTrane Wireless Zone Sensor (SEN02263 - BAYSENS202A)
$100.00$4.43 shippingNew ListingJohnson Controls, TE-6311P-1, Duct Probe Temp Sensor, New
$35.00Free shippingL@@K Trane OEM 10K Wired Zone Sensor SEN01447 SEN-1447 X13511527-01 X1351152701
$75.00or Best Offer$5.85 shippingNEW leakSMART Pro ITEM# 8850600 Sensor 2.0 Wireless & Waterproof Leak Detector
$35.00Trending at $40.00eBay determines this price through a machine learned model of the product's sale prices within the last 90 days.or Best OfferFree shippingTrane Service First X13790901030 BAYWCll189A WCI Air-Fi 100m W MOD2969
$39.99or Best OfferFree shippingReplacement for Honeywell C7089U1006 Outdoor Temperature 60" Leads
$15.95or Best OfferFree shippingNew ListingHeater 85MA 24VAC L4064t1348 3 Used
$55.00$5.90 shippingTrane 5000_1.04 CO2 Sensor BAYSENS251A
$85.00$6.15 shippingSetra 2301025PD5V11BC Wet-to-Wet Differential Pressure Transmitter
$249.99or Best OfferJohnson Controls TE-68NP-1N00S Wall Mount Temp. Sensor 1K Nickel Modular Jack
$40.00or Best Offer$5.90 shippingOnly 1 left!Resideo YCHW3000W3003 L1 WiFi Water Leak and Freeze Detector and Sensor Cable (3
$154.35Free shippingCarrier HH79NZ086 THERMISTOR. New & Free Shipping
$41.00Free shippingOnly 1 left!EC-Sensor (pdivi-3001w1012)
$60.00or Best Offer$4.02 shippingOnly 1 left!New ListingRiello 3013136 R Series Electrode
$100.00or Best Offer$5.95 shippingDiversiTech SOS-1 Condensate Safety Overflow Switch
$12.50Free shippingHoneywell T7047C-1140 Remote Space Sensor (For Use With XL5000 Products) White
$25.00or Best Offer$19.01 shippingKestrel DROP D2 Wireless Temperature & Humidity Data Logger
$60.00or Best Offer$8.30 shippingTrane BAYSENS119A SEN01577 X13790884-01 Zone Sensor NEW
$130.00$5.90 shippingJohnson Controls TE-67NP-2N00 Temperature Sensor
$49.88or Best OfferFree shippingHoneywell C7632B1002 CO2 Sensor Control
$299.99or Best Offer$6.12 shipping1X HE-69530NP-0 Air Duct Temperature and Humidity Sensor Transmitter
$129.75or Best Offer$3.00 shippingAAON Incorporated P87930 2 Slot Modular I/O Sub Base Board - WattMaster YS101780
$125.00or Best OfferFree shippingTrane SEN02076 Reliatel Non-Programmable Wired Display Zone Sensor
$45.00or Best OfferFree shipping26 soldHoneywell T7771A1005 - 20K OHM NTC TEMP SENSOR - Old Stock
$20.00$23.09 shippingSiemens QAA2280.FWSC Room Temperature Sensor Full Feature
$45.00or Best OfferFree shipping65 soldallure EC-Smart-Vue pdite-smrtvue-01
$100.00or Best Offer$4.43 shippingAquaMotion AMK-ODR Superflow under sink Hot water Circulation For Tankless
$110.00or Best OfferFree shippingJohnson Controls A99BB-200C Temperature Sensor 6.5ft (2m) Cable -40 to 212°F
$22.00or Best Offer$5.35 shippingOnly 1 left!New Siemens Powers 184-0001 TT 184 35-135F Rigid Bulb Temperature Transmitter
$125.00$11.30 shippingHoneywell 54G4401 Enthalpy Sensor, Free Shipping!
$39.99or Best OfferFree shippingBroan Bathroom Override 20/40/60 Minute Wall Control VBATHW New IN BOX
$13.50Trending at $16.66eBay determines this price through a machine learned model of the product's sale prices within the last 90 days.Free shippingBaxi QAA73 (Open Therm) Room Controller
$111.00Free shippingOnly 1 left!8 Hydrodynamics Humidity sensors
$40.000 bidsor Best OfferEnding Today at 5:56PM PDT2h 27m$5.93 shippingBenefits charityNew ListingHoneywell C7735A 1000 Discharge Air Temperature Sensor
$12.00$5.45 shippingTrane OEM Temperature Sensor SEN02133 SEN2133 X13651507-03 X13650726100
$95.00Free shippingNew ListingFireye 45UV5-1009 UV Self-Check Flame Scanner: New In Box -sealed
$430.00or Best Offer$13.30 shippingHoneywell C554A1463 Cadmium Sulfide Flame Detector New Sealed Free Shipping
$24.95Free shippingNew ListingDistech Controls EC-Smart-Vue-H PDITE-smrtvuh-01 Temperature Sensor
$85.00or Best Offer$4.43 shippingMSA Chillgard End Of Line Filter #711561
$50.00or Best OfferFree shippingJohnson Controls / York 025-41756-003 Pressure Transducer
$185.00or Best Offer$5.00 shippingDistech Control EC-SENSOR PDITE-SENSORXO (No Display) New
$26.99Was: $29.99Free shippingSAFE-T-SWITCH MODEL SS2 Condensate Overflow Shut Off Switch
$18.00or Best OfferFree shippingRanco 1309007-044 Temperature Sensor, Gray, 22 Gauge Cable
Free Shipping on orders over $75$18.15Was: $18.75$5.00 shipping57 soldOEM Genuine TRANE SEN02133 X13650726100 Temperature Sensor SEN2133 X13651507-03
$79.96or Best OfferFree shippingJohnson Controls 4 inch PROBE NS-DTN7043; NETWORK DISCHARGE AIR SENSOR 4 INCH
$50.00or Best Offer$18.05 shippingEnthalpy sensor
$30.00or Best OfferFree shipping