Sensors & Control Accessories

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A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab.
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tekmar - Designer Series - 552 - Thermostat - 7-Day Programmable - Compatible with tekmarNet 2 and tekmarNet 4 - One Stage Heat - Touchscreen
Item#: 32552
Model#: 552
Brand: Tekmar
$269.00
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tekmar - Designer Series - 553 - Thermostat - 7-Day Programmable - Compatible with tekmarNet 2 and tekmarNet 4 - Two Stage Heat, One Stage Cool, One Fan - Touchscreen
Item#: 32553
Model#: 553
Brand: Tekmar
$380.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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tekmar - Designer Series - 557 - Thermostat - 7-Day Programmable - Compatible with tekmarNet 2 and tekmarNet 4 - Two Stage Heat, Two Stage Cool - Heat Pump - Humidity - Backup - Touchscreen
Item#: 32554
Model#: 557
Brand: Tekmar
$584.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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tekmar - Classic Series - 150 - Setpoint Control - One Stage
Item#: 32818
Model#: 150
Brand: Tekmar
$234.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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tekmar - Classic Series - 257 - DHW Control - Two Stage
Item#: 32819
Model#: 257
Brand: Tekmar
$327.00
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tekmar - Classic Series - 261 - Boiler Control - Outdoor Temperature Reset - Two Stage - Setpoint
Item#: 32820
Model#: 261
Brand: Tekmar
$594.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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tekmar - Performance Series - 315 - Wiring Center - Compatible with tekmarNet 4 - Six Zone Valves - For Use with tekmarNet 4 or Stand-Alone Thermostats
Item#: 32822
Model#: 315
Brand: Tekmar
$269.00
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tekmar - Designer Series - 325 - Zone Expansion Module - Compatible with tekmarNet 4 - Six Zone Valves - For Use with tekmarNet 4 or Stand-Alone Thermostats
Item#: 32823
Model#: 325
Brand: Tekmar
$404.00
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tekmar - Designer Series - 326 - Zone Expansion Module - Compatible with tekmarNet 4 - Three Zone Pumps - For Use with tekmarNet 4 or Stand-Alone Thermostats
Item#: 32824
Model#: 326
Brand: Tekmar
$240.00
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tekmar - Performance Series - 400 - House Control - Compatible with tekmarNet 2 - Four Zone Valves - Outdoor Temperature Reset - Boiler - DHW - Setpoint
Item#: 32825
Model#: 400
Brand: Tekmar
$771.00
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tekmar - Performance Series - 401 - House Control - Compatible with tekmarNet 2 - Four Zone Pumps - Outdoor Temperature Reset - Boiler - DHW - Setpoint
Item#: 32826
Model#: 401
Brand: Tekmar
$786.00
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Honeywell, PA404A1033, Honeywell Pressuretrol Controller For Safety Control of Steam Boilers, 0.5 to 9 PSI
Item#: 34951
Model#: PA404A1033
Brand: Honeywell
$229.00
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Honeywell, L8124C1003, Honeywell Triple Aquastat Relay Immersion Type Controller for High Limit Applications
Item#: 35537
Model#: L8124C1003
Brand: Honeywell
$376.00
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Only 4 In-Stock
tekmar - 554 - Thermostat - 7-Day Programmable - Compatible with tekmarNet - One Stage Heat, One Stage Cool - Touchscreen
Item#: 62810
Model#: 554
Brand: Tekmar
$290.00
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tekmar - 680 - Snow Melting Control - Outdoor Temperature Reset - Speed Injection Mixing
Item#: 62811
Model#: 680
Brand: Tekmar
$2,828.00
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tekmar - 742 - Actuating Motor - 10 Newton Meter of Torque Rotary Motion - For tekmar Brass Mixing Valves
Item#: 62812
Model#: 742
Brand: Tekmar
$472.00
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$1,253.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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