Temperature Controllers
Temperature Controllers
Lead Content Warning
Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only.
Lead Content Warning
This product does not comply with the Safe Drinking Water Act, which requires that products used in any system providing water for human consumption (drinking or cooking) to meet low-lead standards. Please check the box below to confirm you are aware that this item is for non-potable water applications only.
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Add to ListAdd to ListSingle Stage ETC Temperature Control w/ 8' Sensor, 120/240V Input ETC-111000-000 Single Stage ETC Temperature Control w/ 8' Sensor, 120/240V InputSKU: ETC-111000-000Brand: Ranco
(110)Add to List -
Add to ListAdd to ListSingle Stage, NEMA 1 Digital Temp Control (120/240VAC SPDT) A421ABC-02C Single Stage, NEMA 1 Digital Temp Control (120/240VAC SPDT)SKU: A421ABC-02CBrand: Johnson Controls(22)Add to List -
Add to ListAdd to ListSingle Stage Temperature Control w/ Sensor (24V Input) ETC-112000-000 Single Stage Temperature Control w/ Sensor (24V Input)SKU: ETC-112000-000Brand: Ranco(16)Add to List -
![Refrigeration Temp Ctrl.<br>w/ 5' Capillary<br>(-30°F to 90°F) Product Image]()
Add to ListAdd to ListRefrigeration Temp Ctrl. w/ 5' Capillary (-30°F to 90°F) 1609-101 Refrigeration Temp Ctrl. w/ 5' Capillary (-30°F to 90°F)SKU: 1609-101Brand: White Rodgers(9)Add to List -
![Single Stage Temp Control w/ 8' Capillary (SPDT) Product Image]()
Add to ListAdd to ListSingle Stage Temp Control w/ 8' Capillary (SPDT) A19ABC-24C Single Stage Temp Control w/ 8' Capillary (SPDT)SKU: A19ABC-24CBrand: Johnson Controls(9)Add to List -
![Single Stage Digital Temperature Control (24V, SPDT) Product Image]()
Add to ListAdd to ListSingle Stage Digital Temperature Control (24V, SPDT) A421GBF-02C Single Stage Digital Temperature Control (24V, SPDT)SKU: A421GBF-02CBrand: Johnson Controls(4)Add to List -
![Remote Bulb Temp Ctrl Cooling Only<br>(-30°F to 100°F)<br> Product Image]()
Add to ListAdd to ListRemote Bulb Temp Ctrl Cooling Only (-30°F to 100°F) A19ABA-40C Remote Bulb Temp Ctrl Cooling Only (-30°F to 100°F)SKU: A19ABA-40CBrand: Johnson Controls(7)Add to List -
![Temperature Sensor<br>for Ranco Control Product Image]()
Add to ListAdd to ListTemperature Sensor for Ranco Control 1309007-044 Temperature Sensor for Ranco ControlSKU: 1309007-044Brand: Ranco(7)Add to List -
![Temperature Control<br>2 Inputs, 4 SPDT Relays<br>1 Sensor Product Image]()
Add to ListAdd to ListTemperature Control 2 Inputs, 4 SPDT Relays 1 Sensor T775B2040 Temperature Control 2 Inputs, 4 SPDT Relays 1 SensorSKU: T775B2040Brand: Honeywell(7)Add to List -
![Temperature Control<br>1 Input, 1 SPDT Relay<br>1 Sensor Included Product Image]()
Add to ListAdd to ListTemperature Control 1 Input, 1 SPDT Relay 1 Sensor Included T775A2009 Temperature Control 1 Input, 1 SPDT Relay 1 Sensor IncludedSKU: T775A2009Brand: Honeywell(6)Add to List -
![2-Stage Temperature Control w/ Sensor (120/240V Input) Product Image]()
Add to ListAdd to List2-Stage Temperature Control w/ Sensor (120/240V Input) ETC-211000-000 2-Stage Temperature Control w/ Sensor (120/240V Input)SKU: ETC-211000-000Brand: Ranco(12)Add to List -
![1097 Ohm Standard Temperature Sensor Product Image]()
Add to ListAdd to List1097 Ohm Standard Temperature Sensor 50021579-001 1097 Ohm Standard Temperature SensorSKU: 50021579-001Brand: HoneywellAdd to List -
![Electronic<br>Temperature Controller<br>(24/120/208/240 Volts AC) Product Image]()
Add to ListAdd to ListElectronic Temperature Controller (24/120/208/240 Volts AC) 16E09-101 Electronic Temperature Controller (24/120/208/240 Volts AC)SKU: 16E09-101Brand: White Rodgers(4)Add to List -
![1-Stage ETC Temp. Control w/ Sensor (120/240V Input) Plastic Enclosure Product Image]()
Add to ListAdd to List1-Stage ETC Temp. Control w/ Sensor (120/240V Input) Plastic Enclosure ETC-141000-000 1-Stage ETC Temp. Control w/ Sensor (120/240V Input) Plastic EnclosureSKU: ETC-141000-000Brand: Ranco(4)Add to List -
![Replacement PTC Sensor<br>with 6-1/2' (2 m) Leads Product Image]()
Add to ListAdd to ListReplacement PTC Sensor with 6-1/2' (2 m) Leads A99BB-200C Replacement PTC Sensor with 6-1/2' (2 m) LeadsSKU: A99BB-200CBrand: Johnson Controls(6)Add to List -
![Temperature Control (-30° to 100°F) Product Image]()
Add to ListAdd to ListTemperature Control (-30° to 100°F) A19BBC-2C Temperature Control (-30° to 100°F)SKU: A19BBC-2CBrand: Johnson Controls(4)Add to List -
![Temperature Control<br>2 Inputs, 2 SPDT Relays<br>1 Sensor Product Image]()
Add to ListAdd to ListTemperature Control 2 Inputs, 2 SPDT Relays 1 Sensor T775B2032 Temperature Control 2 Inputs, 2 SPDT Relays 1 SensorSKU: T775B2032Brand: Honeywell(5)Add to List -
![Temperature Control<br>2 Inputs, 2 Analog Outputs <br>1 Sensor Included Product Image]()
Add to ListAdd to ListTemperature Control 2 Inputs, 2 Analog Outputs 1 Sensor Included T775M2006 Temperature Control 2 Inputs, 2 Analog Outputs 1 Sensor IncludedSKU: T775M2006Brand: Honeywell(2)Add to List -
![Temperature Control<br>2 Inputs, 2 SPDT, 2 Analog Outputs, 1 Sensor Product Image]()
Add to ListAdd to ListTemperature Control 2 Inputs, 2 SPDT, 2 Analog Outputs, 1 Sensor T775M2048 Temperature Control 2 Inputs, 2 SPDT, 2 Analog Outputs, 1 SensorSKU: T775M2048Brand: Honeywell(3)Add to List -
![Temperature Control (100°-240°F) Product Image]()
Add to ListAdd to ListTemperature Control (100°-240°F) A19DAC-1C Temperature Control (100°-240°F)SKU: A19DAC-1CBrand: Johnson Controls(3)Add to List -
![Remote Bulb Refrigeration Temperature Controller (-30°F to 90°F, 8' Cap) Product Image]()
Add to ListAdd to ListRemote Bulb Refrigeration Temperature Controller (-30°F to 90°F, 8' Cap) T6031A1136 Remote Bulb Refrigeration Temperature Controller (-30°F to 90°F, 8' Cap)SKU: T6031A1136Brand: Honeywell(6)Add to List -
![Remote Bulb Refrigeration Temperature Controller (-30°F to 90°F, 8' Cap) Product Image]()
Add to ListAdd to ListRemote Bulb Refrigeration Temperature Controller (-30°F to 90°F, 8' Cap) T6031A1029 Remote Bulb Refrigeration Temperature Controller (-30°F to 90°F, 8' Cap)SKU: T6031A1029Brand: Honeywell(1)Add to List -
![Cut-In Control (41°F) Product Image]()
Add to ListAdd to ListAdd to List -
![Temperature Control<br>2 Inputs, 4 SPDT Relays<br>1 Sensor, NEMA 4X Product Image]()
Add to ListAdd to ListTemperature Control 2 Inputs, 4 SPDT Relays 1 Sensor, NEMA 4X T775B2024 Temperature Control 2 Inputs, 4 SPDT Relays 1 Sensor, NEMA 4XSKU: T775B2024Brand: Honeywell(5)Add to List -
![1097 ohm Water-resistant Temperature Sensor Product Image]()
Add to ListAdd to List1097 ohm Water-resistant Temperature Sensor T775-SENS-WR 1097 ohm Water-resistant Temperature SensorSKU: T775-SENS-WRBrand: Honeywell(2)Add to List -
![Two Stage Temperature Control w/ Sensor (24V Input) Product Image]()
Add to ListAdd to ListTwo Stage Temperature Control w/ Sensor (24V Input) ETC-212000-000 Two Stage Temperature Control w/ Sensor (24V Input)SKU: ETC-212000-000Brand: Ranco(8)Add to List -
![Remote Bulb Commercial<br>Temperature Controller<br>55°F- 175°F (20' Capillary) Product Image]()
Add to ListAdd to ListRemote Bulb Commercial Temperature Controller 55°F- 175°F (20' Capillary) T675A1425 Remote Bulb Commercial Temperature Controller 55°F- 175°F (20' Capillary)SKU: T675A1425Brand: HoneywellAdd to List -
![Remote Bulb Commercial<br>Temperature Controller<br>0°F to 100°F (5' Capillary) Product Image]()
Add to ListAdd to ListRemote Bulb Commercial Temperature Controller 0°F to 100°F (5' Capillary) T675A1508 Remote Bulb Commercial Temperature Controller 0°F to 100°F (5' Capillary)SKU: T675A1508Brand: Honeywell(1)Add to List -
![Freeze Stat Refrigeration Controller (15° to 55° F) Product Image]()
Add to ListAdd to ListFreeze Stat Refrigeration Controller (15° to 55° F) L482A1004 Freeze Stat Refrigeration Controller (15° to 55° F)SKU: L482A1004Brand: HoneywellAdd to List -
![Remote Bulb Commercial<br>Temperature Controller <br>55°F to 175°F (5' Capillary) Product Image]()
Add to ListAdd to ListRemote Bulb Commercial Temperature Controller 55°F to 175°F (5' Capillary) T675A1540 Remote Bulb Commercial Temperature Controller 55°F to 175°F (5' Capillary)SKU: T675A1540Brand: HoneywellAdd to List -
![Single Stage Digital Temperature Control w/ Off Cycle Defrost (120/240VAC) Product Image]()
Add to ListAdd to ListSingle Stage Digital Temperature Control w/ Off Cycle Defrost (120/240VAC) A421ABD-02C Single Stage Digital Temperature Control w/ Off Cycle Defrost (120/240VAC)SKU: A421ABD-02CBrand: Johnson Controls(2)Add to List -
![Modulating Temperature Controller, 160°F to 260°F <br>(5' Capillary) Product Image]()
Add to ListAdd to ListModulating Temperature Controller, 160°F to 260°F (5' Capillary) T991A1061 Modulating Temperature Controller, 160°F to 260°F (5' Capillary)SKU: T991A1061Brand: HoneywellAdd to List -
![1/2" Well (2-3/8"long) Product Image]()
Add to ListAdd to List1/2" Well (2-3/8"long) WEL11A-601R 1/2" Well (2-3/8"long)SKU: WEL11A-601RBrand: Johnson Controls(6)Add to List -
![Single Stage Digital Temperature Control w/ 6 Ft. 7-1/5" Leads (120/240v, SPDT) Product Image]()
Add to ListAdd to ListSingle Stage Digital Temperature Control w/ 6 Ft. 7-1/5" Leads (120/240v, SPDT) A421AEC-02C Single Stage Digital Temperature Control w/ 6 Ft. 7-1/5" Leads (120/240v, SPDT)SKU: A421AEC-02CBrand: Johnson Controls(1)Add to List -
![Cut-In Control (37°F) Product Image]()
Add to ListAdd to ListAdd to List -
![Temperature Control<br>1 Input, Sensor B Input<br>2 SPDT, 2 Outputs Product Image]()
Add to ListAdd to ListTemperature Control 1 Input, Sensor B Input 2 SPDT, 2 Outputs T775U2016 Temperature Control 1 Input, Sensor B Input 2 SPDT, 2 OutputsSKU: T775U2016Brand: HoneywellAdd to List -
![1097 ohm Outdoor Air Temperature Sensor Product Image]()
Add to ListAdd to List1097 ohm Outdoor Air Temperature Sensor T775-SENS-OAT 1097 ohm Outdoor Air Temperature SensorSKU: T775-SENS-OATBrand: HoneywellAdd to List -
![Freezestat (34°-60°F) Product Image]()
Add to ListAdd to ListAdd to List -
![Single Stage Digital Temp Control w/ 9-3/4' Leads (120/240V SPDT) Product Image]()
Add to ListAdd to ListSingle Stage Digital Temp Control w/ 9-3/4' Leads (120/240V SPDT) A421ABC-03C Single Stage Digital Temp Control w/ 9-3/4' Leads (120/240V SPDT)SKU: A421ABC-03CBrand: Johnson ControlsAdd to List -
![Cut-In Control (38°F) Product Image]()
Add to ListAdd to ListAdd to List -
![Proportional Temperature Control, -30F to 130F 0-10VDC, 4-20MA Product Image]()
Add to ListAdd to ListProportional Temperature Control, -30F to 130F 0-10VDC, 4-20MA A350PS-1C Proportional Temperature Control, -30F to 130F 0-10VDC, 4-20MASKU: A350PS-1CBrand: Johnson Controls(2)Add to List -
![Single Stage, NEMA 4X Digital Temp Control (120/240V SPDT) Product Image]()
Add to ListAdd to ListSingle Stage, NEMA 4X Digital Temp Control (120/240V SPDT) A421AEC-01C Single Stage, NEMA 4X Digital Temp Control (120/240V SPDT)SKU: A421AEC-01CBrand: Johnson ControlsAdd to List -
![Single Stage Digital Temp Control w/ 19-1/2' Leads (120/240V SPDT) Product Image]()
Add to ListAdd to ListSingle Stage Digital Temp Control w/ 19-1/2' Leads (120/240V SPDT) A421ABC-06C Single Stage Digital Temp Control w/ 19-1/2' Leads (120/240V SPDT)SKU: A421ABC-06CBrand: Johnson Controls(2)Add to List -
![1097 ohm Water-tight Temperature Sensor Product Image]()
Add to ListAdd to List1097 ohm Water-tight Temperature Sensor T775-SENS-WT 1097 ohm Water-tight Temperature SensorSKU: T775-SENS-WTBrand: Honeywell(1)Add to List -
![Temperature Control Special Sequencer<br>2 Inputs, 4 SPDT, 1 Sensor Product Image]()
Add to ListAdd to ListTemperature Control Special Sequencer 2 Inputs, 4 SPDT, 1 Sensor T775L2007 Temperature Control Special Sequencer 2 Inputs, 4 SPDT, 1 SensorSKU: T775L2007Brand: HoneywellAdd to List -
![Refrigeration Temp Ctrl.<br>w/ 8'' Capillary<br>(-30°F to 90°F) Product Image]()
Add to ListAdd to ListRefrigeration Temp Ctrl. w/ 8'' Capillary (-30°F to 90°F) 1687-9 Refrigeration Temp Ctrl. w/ 8'' Capillary (-30°F to 90°F)SKU: 1687-9Brand: White Rodgers(6)Add to List -
![Electronic Temp. Control w/ Plug In Cord, Display, and Nema 1 (120 VAC) Product Image]()
Add to ListAdd to ListElectronic Temp. Control w/ Plug In Cord, Display, and Nema 1 (120 VAC) A421ABG-02C Electronic Temp. Control w/ Plug In Cord, Display, and Nema 1 (120 VAC)SKU: A421ABG-02CBrand: Johnson Controls(1)Add to List -
![Temperature Control Boiler Special w/ 3 Inputs<br>4 SPDT, 3 Sensors Product Image]()
Add to ListAdd to ListTemperature Control Boiler Special w/ 3 Inputs 4 SPDT, 3 Sensors T775P2003 Temperature Control Boiler Special w/ 3 Inputs 4 SPDT, 3 SensorsSKU: T775P2003Brand: Honeywell(3)Add to List
FAQs, Manuals & Videos
Resources
Articles
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More about Temperature Controllers
Temperature controllers are used to regulate temperatures without extensive operator involvement. Temperature controllers can be used in a wide range of applications. Certain features should be considered before selecting a temperature controller, with the most important being the controller's temperature range. Other factors that should be considered are the application type, input sensor type, number of outputs, and the type of outputs.
Pneumatic temperature controllers regulate air and liquid temperatures. They are designed for heating and cooling unit ventilators and fan coil units. Pneumatic temperature controllers operate in three phases. First, the pneumatic temperature controller senses the temperature being monitored. It then attempts to balance its internal lever system. Finally it adjusts its pilot pressure to counterbalance the main lever force. A pneumatic temperature controller can have direct action or reverse action. In a direct acting pneumatic controller, the output signal rises as the temperature rises. The opposite is true for a reverse acting pneumatic temperature controller. Both provide proportional control of pneumatic valves and damper actuators in heating and air conditioning systems. Direct acting and reverse acting controllers are available in one pipe or two pipe configurations. A one pipe configuration is used in low air capacity applications, while a two pipe configuration is used in high air capacity applications. Two pipe controllers are the more popular option on our website.
Modulating temperature controllers are used to adjust water control or air temperature in ducts, tanks, and similar applications. These controllers should be selected based on the features the application requires. Models with a copper fast response element provide a response time four times faster than standard models. Modulating temperature controllers can have an analog or relay output type.
Return-air temperature controllers are used to maintain a constant ambient temperature in farm, industrial, or commercial applications. These controls regulate temperature in ventilation, heating, or cooling systems by adjusting the temperature of the air supplied by individual cooling units. A return-air temperature controller regulates the temperature on the supply side of an air handler. This allows a facility to control and supply predictable temperatures, thereby reducing operating costs.
Ambistat temperature controllers are used for HVAC, agricultural, and industrial applications. An ambistat temperature control regulates a wide temperature range and can be used in many applications. Common applications for these controls are beverage dispensing machines, ice cube machines, bulk milk tanks, dishwashers, crop drying, tobacco curing, and similar applications.
Electronic temperature controls are the next generation of commercial and agricultural temperature controls. These versatile controls are economical, programmable, and simple to install. A sequencer model and a universal input model are the two unique models available. The sequencer model eliminates the need for a separate time delay device. It uses a time clock scheduler/digital input to control setback and disables output to save energy. It also controls floating actuators with floating outputs. The universal input model can control pressure, humidity, or any variable analog input. A special boiler model is available for boiler control. The staged sequencing model is the best option for applications that require relays to be staged in sequence.
We carry a wide selection of Honeywell, Ranco, and White Rodgers temperature controllers for residential or commercial applications.
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