Skip Content

Filter Results By

Item
Brand
Price
Shop By

Thermostat Accessories

136 Results Found that Include 136 Products

Product availability based on selecting either shipping or pick up and a location. Dismiss
Results per page: 16 | 32 | 48
Plug,Thermocouple,K
Plug,Thermocouple,K
  • Plug, Thermocouple, KPlug,Thermocouple,K
  • Item # 3HL36
  • Mfr. Model # N56/05013-K
  • Thermocouple Plug, Type K, Plug/Connector Female, Color Yellow, Quick Disconnect, Cromel Alumel, Plug and...More

Temperature Sensor,1K Ohm
  • Temperature Sensor, 1K OhmTemperature Sensor,1K Ohm
  • Item # 44C531
  • Mfr. Model # 1309007-044
  • Temperature Sensor, For Use With Ranco ETC Series Controllers, 22 Gauge Cable, Color Gray, Length (In.) 96,...More

Coverplate,Plastic
  • Coverplate, PlasticCoverplate,Plastic
  • Item # 4YE44
  • Mfr. Model # 50001137-001
  • Cover Plate, Color White, Material Plastic, Height 5 In, Width 6 7/8 In, For Use With Thermostats 4YE42, 4YE43...More

20 K Ohm Remote Temp Sensor, Wall Module
  • 20 K Ohm Remote Temp Sensor, Wall Module20 K Ohm Remote Temp Sensor, Wall Module
  • Item # 3RCP5
  • Mfr. Model # TR21
  • Remote Sensor, Wall Module, Replaces Model (6WY20) T7770A1006, 20 K Ohm NTC Non-Linear Temp, Color White,...More

Subbase,Thermostat
Indoor Sensor, Cover Color White
  • Indoor Sensor, Cover Color WhiteIndoor Sensor, Cover Color White
  • Item # 6WY16
  • Mfr. Model # C7189U1005
  • Indoor Sensor, White, Operating Temp Range 45 to 88 F, 10K Nominal Sensor Ohms @ 75F, Plastic Material, 1 1/2...More

Calibration/Wrench Kit
Temperature Sensor
  • Temperature SensorTemperature Sensor
  • Item # 12Y968
  • Mfr. Model # A99BB-200C
  • Temperature Sensor, For Use With C450RCN-1C, Color Gray, Length (In.) 1, Dia. (In.) 1/4, Operating Temp....More

Remote Sensor,Use With T775 Series 2
  • Remote Sensor, Use With T775 Series 2Remote Sensor,Use With T775 Series 2
  • Item # 3CHJ9
  • Mfr. Model # 50021579-001
  • Remote Sensor, Standard, For Use With T775 Series 2, Control Range -40 to 158 F, Temperature Sensitivity (+ -...More

Remote Sensor,Water Tight
  • Remote Sensor, Water TightRemote Sensor,Water Tight
  • Item # 2GZP5
  • Mfr. Model # T775-SENS-WT
  • Remote Sensor, Water Tight, Switch Type SPDT, Control Range -40 to 270 F, Insertion Depth 2 In, Overall...More

Water Temp Sensor
  • Water Temp SensorWater Temp Sensor
  • Item # 3TZ85
  • Mfr. Model # 198212CA
  • Replacement Water Temp Sensor, For Honeywell Electronic Remote Temperature Controller, Outdoor, Water Tight,...More

Carbon Dioxide Sensor,Wall ,LCD Display
  • Carbon Dioxide Sensor, Wall , LCD DisplayCarbon Dioxide Sensor,Wall ,LCD Display
  • Item # 6LJJ9
  • Mfr. Model # C7232A1008
  • CO2 Sensor, Wall Mount, For Use With HVAC Controllers, Color White, Height (In.) 5-1/16, Width (In.) 3-11/16,...More

Duct CO2 Sensor,24VAC
  • Duct CO2 Sensor, 24VACDuct CO2 Sensor,24VAC
  • Item # 5WYE9
  • Mfr. Model # QPM2100
  • CO2 Duct Sensor, For Use With 0 - 10Vdc Controller Inputs, Color White, Height (In.) 1.625, Width (In.) 1.25,...More

Surface Mounting Bracket
Line Voltage Thermostat Knob for 6EDY9
CO2 Sensor,Indoor,White
  • CO2 Sensor, Indoor, WhiteCO2 Sensor,Indoor,White
  • Item # 20RG59
  • Mfr. Model # CD-P00-00-0
  • CO2 Sensor, Indoor, For Use With BAS System, Color White, Height (In.) 3-5/32, Width (In.) 3-3/16, Length...More

Remote Indoor Sensor,White,40 to 110F
Coverplate,Wall,White
  • Coverplate, Wall, WhiteCoverplate,Wall,White
  • Item # 3MY21
  • Mfr. Model # F61-2500
  • Wall Coverplate, Use with Thermostat 1RC44, 1RC45, 1RC47, 3MY12, 3MY13, 3MY14, 3MY15, 3MY16, 3MY17, Color...More

RedLink Internet Gateway
  • RedLink Internet GatewayRedLink Internet Gateway
  • Item # 12Z044
  • Mfr. Model # THM6000R1002
  • RedLink Internet Gateway, Redlink Enabled Wireless, For Use With RedLink Enabled Thermostats And Accessories,...More

10 K Ohm Remote Temp Sensor, Wall Module
  • 10 K Ohm Remote Temp Sensor, Wall Module10 K Ohm Remote Temp Sensor, Wall Module
  • Item # 3RCP6
  • Mfr. Model # TR21-A
  • Remote Sensor, Wall Module, Replaces Model (6WY21) T7770A3002, 10K Ohm For Averaging Only, Color White,...More

Plug,Thermocouple,J
  • Plug, Thermocouple, JPlug,Thermocouple,J
  • Item # 3HL35
  • Mfr. Model # N56/05013-J
  • Thermocouple Plug, Type J, Plug/Connector Female, Color Black, Quick Disconnect, Iron Constantan, Plug and...More

Plug,Thermocouple,J
Outdoor Sensor,Black
  • Outdoor Sensor, BlackOutdoor Sensor,Black
  • Item # 6WY17
  • Mfr. Model # C7089U1006
  • Outdoor Sensor, Black, Operating Temp Range -40 to 120 F, 10K Nominal Sensor Ohms @ 75F, Plastic Material,...More

Sensor,Remote
  • Sensor, RemoteSensor,Remote
  • Item # 3MY18
  • Mfr. Model # F145-1328
  • Remote Sensor, Indoor, For Use With Any Wired White-Rodgers Thermostat with Remote Sensing Capability,...More

Decorative Cover Plate,For 4EY30,4EY31
Wireless Indoor Sensor
  • Wireless Indoor SensorWireless Indoor Sensor
  • Item # 12Z045
  • Mfr. Model # C7189R1004
  • Wireless Indoor Sensor, Redlink Enabled Wireless, For Use With RedLink Enabled Thermostats And Accessories,...More

Temperature Dial,Infinite
Remote Sensor,Water Resistant
  • Remote Sensor, Water ResistantRemote Sensor,Water Resistant
  • Item # 2GZP4
  • Mfr. Model # T775-SENS-WR
  • Remote Sensor, Water Resistant, Switch Type SPDT, Control Range -40 to 270 F, Insertion Depth 2 In, Overall...More

Wall Mount Humidity Sensor
  • Wall Mount Humidity SensorWall Mount Humidity Sensor
  • Item # 6CJN6
  • Mfr. Model # HS-50-S
  • Humidity Sensor, Indoor Wall Mounted, For Use With HC-110S-24, Color White, Height (In.) 3-1/8, Width (In.)...More

Optional Knob,Marked 0-10,Use With 4TCZ1
Outdoor sensor,w/Batteries
  • Outdoor sensor, w/BatteriesOutdoor sensor,w/Batteries
  • Item # 3RCP2
  • Mfr. Model # C7089R1013
  • Outdoor Sensor, Replacement Sensor, For Use With Redlink Enabled Thermostats And Accessories, Senses Outdoor...More

Results per page: 16 | 32 | 48

Check out HVAC thermostat accessories at Grainger to complete or enhance your climate control system or replace worn out parts. You’ll find a variety of accessories such as indoor sensors, remote sensors, universal cover plates, calibration wrench kits, surface mounting brackets, thermocouple plugs, thermocouple adapters and much more. Make the most of your thermostat with accessories from Grainger!

Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order. More