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  • Single Stage ETC Temperature Control w/ 8' Sensor, 120/240V Input Product Image
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    Single Stage ETC Temperature Control w/ 8' Sensor, 120/240V Input ETC-111000-000 Single Stage ETC Temperature Control w/ 8' Sensor, 120/240V Input
    SKU: ETC-111000-000 Ranco
    SKU: ETC-111000-000
    Brand: Ranco
    (122)
    $62.30 each
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    1,475
    Tue, Nov 2
    1,475
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    1,475 Tue, Nov 2
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  • Single Stage, NEMA 1 Digital Temp Control (120/240VAC SPDT) Product Image
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    Single Stage, NEMA 1 Digital Temp Control (120/240VAC SPDT) A421ABC-02C Single Stage, NEMA 1 Digital Temp Control (120/240VAC SPDT)
    SKU: A421ABC-02C Johnson Controls
    SKU: A421ABC-02C
    Brand: Johnson Controls
    (25)
    $73.23 each
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    824
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    824 Tue, Nov 2
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  • Refrigeration Temp Ctrl.<br>w/ 5' Capillary<br>(-30&#176;F to 90&#176;F) Product Image
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    Refrigeration Temp Ctrl. w/ 5' Capillary (-30°F to 90°F) 1609-101 Refrigeration Temp Ctrl. w/ 5' Capillary (-30°F to 90°F)
    SKU: 1609-101 White Rodgers
    SKU: 1609-101
    Brand: White Rodgers
    (10)
    $56.23 each
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    276
    Tue, Nov 2
    276
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    276 Tue, Nov 2
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  • Single Stage Temp Control w/ 8' Capillary (SPDT) Product Image
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    Single Stage Temp Control w/ 8' Capillary (SPDT) A19ABC-24C Single Stage Temp Control w/ 8' Capillary (SPDT)
    SKU: A19ABC-24C Johnson Controls
    SKU: A19ABC-24C
    Brand: Johnson Controls
    (11)
    $58.29 each
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    634
    Tue, Nov 2
    634
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    634 Tue, Nov 2
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  • Single Stage Digital Temperature Control (24V, SPDT) Product Image
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    Single Stage Digital Temperature Control (24V, SPDT) A421GBF-02C Single Stage Digital Temperature Control (24V, SPDT)
    SKU: A421GBF-02C Johnson Controls
    SKU: A421GBF-02C
    Brand: Johnson Controls
    (4)
    $65.13 each
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    382
    Tue, Nov 2
    382
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    382 Tue, Nov 2
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  • Single Stage Temperature Control w/ Sensor (24V Input) Product Image
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    Single Stage Temperature Control w/ Sensor (24V Input) ETC-112000-000 Single Stage Temperature Control w/ Sensor (24V Input)
    SKU: ETC-112000-000 Ranco
    SKU: ETC-112000-000
    Brand: Ranco
    (20)
    $72.48 each
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    93
    Tue, Nov 2
    93
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    93 Tue, Nov 2
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  • Cut-In Control (41&#176;F) Product Image
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    Cut-In Control (41°F) A12-701 Cut-In Control (41°F)
    SKU: A12-701 Ranco
    SKU: A12-701
    Brand: Ranco
    (4)
    $62.63 each
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    227
    Tue, Nov 2
    227
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    227 Tue, Nov 2
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  • Remote Bulb Temp Ctrl Cooling Only<br>(-30&#176;F to 100&#176;F)<br> Product Image
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    Remote 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-40C Johnson Controls
    SKU: A19ABA-40C
    Brand: Johnson Controls
    (9)
    $57.32 each
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    328
    Tue, Nov 2
    328
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    328 Tue, Nov 2
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  • Electronic<br>Temperature Controller<br>(24/120/208/240 Volts AC) Product Image
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    Electronic Temperature Controller (24/120/208/240 Volts AC) 16E09-101 Electronic Temperature Controller (24/120/208/240 Volts AC)
    SKU: 16E09-101 White Rodgers
    SKU: 16E09-101
    Brand: White Rodgers
    (5)
    $69.37 each
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    251
    Tue, Nov 2
    251
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    251 Tue, Nov 2
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  • Remote Bulb Refrigeration Temperature Controller (-30&#176;F to 90&#176;F, 8' Cap) Product Image
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    Remote 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: T6031A1029 Honeywell
    SKU: T6031A1029
    Brand: Honeywell
    (1)
    $70.99 each
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    138
    Tue, Nov 2
    138
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    138 Tue, Nov 2
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  • Single Stage Digital Temperature Control w/ Off Cycle Defrost (120/240VAC) Product Image
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    Single 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-02C Johnson Controls
    SKU: A421ABD-02C
    Brand: Johnson Controls
    (2)
    $84.40 each
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    194
    Tue, Nov 2
    194
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    194 Tue, Nov 2
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  • Temperature Sensor<br>for Ranco Control Product Image
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    Temperature Sensor for Ranco Control 1309007-044 Temperature Sensor for Ranco Control
    SKU: 1309007-044 Ranco
    SKU: 1309007-044
    Brand: Ranco
    (8)
    $15.21 each
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    141
    Tue, Nov 2
    141
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    141 Tue, Nov 2
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  • Temperature Control<br>1 Input, 1 SPDT Relay<br>1 Sensor Included Product Image
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    Temperature Control 1 Input, 1 SPDT Relay 1 Sensor Included T775A2009 Temperature Control 1 Input, 1 SPDT Relay 1 Sensor Included
    SKU: T775A2009 Honeywell
    SKU: T775A2009
    Brand: Honeywell
    (7)
    $141.99 each
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    92
    Tue, Nov 2
    92
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    92 Tue, Nov 2
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  • Temperature Control (-30&#176; to 100&#176;F) Product Image
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    Temperature Control (-30° to 100°F) A19BBC-2C Temperature Control (-30° to 100°F)
    SKU: A19BBC-2C Johnson Controls
    SKU: A19BBC-2C
    Brand: Johnson Controls
    (4)
    $79.86 each
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    361
    Tue, Nov 2
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    361 Tue, Nov 2
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  • 2-Stage Temperature Control w/ Sensor (120/240V Input) Product Image
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    2-Stage Temperature Control w/ Sensor (120/240V Input) ETC-211000-000 2-Stage Temperature Control w/ Sensor (120/240V Input)
    SKU: ETC-211000-000 Ranco
    SKU: ETC-211000-000
    Brand: Ranco
    (12)
    $108.84 each
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    Mon, Nov 15 – Mon, Nov 22
    Arrives
    Mon, Nov 15 – Mon, Nov 22
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  • Temperature Control<br>2 Inputs, 4 SPDT Relays<br>1 Sensor Product Image
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    Temperature Control 2 Inputs, 4 SPDT Relays 1 Sensor T775B2040 Temperature Control 2 Inputs, 4 SPDT Relays 1 Sensor
    SKU: T775B2040 Honeywell
    SKU: T775B2040
    Brand: Honeywell
    (7)
    $315.99 each
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    189
    Tue, Nov 2
    189
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    189 Tue, Nov 2
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  • Cut-In Control (37&#176;F) Product Image
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    Cut-In Control (37°F) A12-700 Cut-In Control (37°F)
    SKU: A12-700 Ranco
    SKU: A12-700
    Brand: Ranco
    (3)
    $59.46 each
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    116
    Tue, Nov 2
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    116 Tue, Nov 2
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  • Freeze Stat Refrigeration Controller (15° to 55° F) Product Image
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    Freeze Stat Refrigeration Controller (15° to 55° F) L482A1004 Freeze Stat Refrigeration Controller (15° to 55° F)
    SKU: L482A1004 Honeywell
    SKU: L482A1004
    Brand: Honeywell
    $156.99 each
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    Mon, Nov 15 – Mon, Nov 22
    Arrives
    Mon, Nov 15 – Mon, Nov 22
    Questions? Call 1-888-757-4774 or
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  • Two Stage Temperature Control w/ Sensor (24V Input) Product Image
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    Two Stage Temperature Control w/ Sensor (24V Input) ETC-212000-000 Two Stage Temperature Control w/ Sensor (24V Input)
    SKU: ETC-212000-000 Ranco
    SKU: ETC-212000-000
    Brand: Ranco
    (8)
    $103.04 each
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    76
    Tue, Nov 2
    76
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    76 Tue, Nov 2
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  • 1097 Ohm Standard Temperature Sensor Product Image
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    1097 Ohm Standard Temperature Sensor 50021579-001 1097 Ohm Standard Temperature Sensor
    SKU: 50021579-001 Honeywell
    SKU: 50021579-001
    Brand: Honeywell
    $45.99 each
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    212
    Tue, Nov 2
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    212 Tue, Nov 2
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  • Replacement PTC Sensor<br>with 6-1/2' (2 m) Leads Product Image
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    Replacement PTC Sensor with 6-1/2' (2 m) Leads A99BB-200C Replacement PTC Sensor with 6-1/2' (2 m) Leads
    SKU: A99BB-200C Johnson Controls
    SKU: A99BB-200C
    Brand: Johnson Controls
    (7)
    $24.48 each
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    192
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    192 Tue, Nov 2
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  • Temperature Control (100&#176;-240&#176;F) Product Image
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    Temperature Control (100°-240°F) A19DAC-1C Temperature Control (100°-240°F)
    SKU: A19DAC-1C Johnson Controls
    SKU: A19DAC-1C
    Brand: Johnson Controls
    (3)
    $84.61 each
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    210
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    210 Tue, Nov 2
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  • Remote Bulb Commercial<br>Temperature Controller<br>0&#176;F to 100&#176;F (5' Capillary) Product Image
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    Remote 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: T675A1508 Honeywell
    SKU: T675A1508
    Brand: Honeywell
    (2)
    $124.99 each
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    133 Tue, Nov 2
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  • Electronic Universal Controller, 2SPDT, 2 Analog outputs, 2 sensor inputs Product Image
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    Electronic Universal Controller, 2SPDT, 2 Analog outputs, 2 sensor inputs T775U2006 Electronic Universal Controller, 2SPDT, 2 Analog outputs, 2 sensor inputs
    SKU: T775U2006 Honeywell
    SKU: T775U2006
    Brand: Honeywell
    (2)
    $279.99 each
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    92
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    92 Tue, Nov 2
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FAQs, Manuals & Videos

Resources

Articles

  • 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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