Sensors & Control Accessories

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tekmar - Classic Series - 518 - Thermostat - Non-Programmable - One Stage Heat
13% Buy This
$111.00
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tekmar - 012 - Adaptor Plate - For Enclosure S
7% Buy This
$31.00
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tekmar - M3023 - 2-1/2" - Seal Kit - For Cast-Iron Valves
7% Buy This
$82.00
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tekmar - M3024 - 3" to 4" - Seal Kit - For Cast-Iron Valves
7% Buy This
$128.00
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tekmar - M3056 - 3/4" to 1-1/4" - O-Ring Kit - For tekmar Brass Mixing Valves
7% Buy This
$39.00
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Learn More About Buderus 7746900845
Buderus - 7746900845 - Cascade Module - MCM10 - For GB142 and GB162 Boilers
7% Buy This
$967.00
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Learn More About Burnham 102714-01
Burnham - Low-Water Cut-Off Option Card Kit - Manual Reset - For Burnham ES2, ESC, MPO-IQ, and Series 3 Hot Water Boilers - MPN: 102714-01
7% Buy This
$264.00
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Learn More About Hydrolevel 3200
Hydrolevel HydroStat 3200 Universal Temperature Limit, Boiler Reset and Low Water Cut-Off for Gas-Fired Boilers, 24 VAC
7% Buy This
$292.00
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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 may apply, see our full shipping policy for more details.
Learn More About Weil-McLain 381356586
Weil-McLain - Outdoor Temperature Sensor Kit - For Weil-McLain GV90+, CGi, CGa, and EG-W Hot Water Boilers - MPN: 381356586
7% Buy This
$37.00
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Learn More About Weil-McLain 510312041
Weil-McLain - Hot Water High Temperature Limit Control - 130-270 F - Manual Reset - 510312041
7% Buy This
$224.00
In-Stock
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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 may apply, see our full shipping policy for more details.
Learn More About Tekmar 521
tekmar - 521 - Thermostat - 7-Day Programmable - Two Stage Heat or One Stage Heat/ One stage Cool - Buttons
7% Buy This
$174.00
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Learn More About Honeywell L8148E1265
$387.00
In-Stock
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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 may apply, see our full shipping policy for more details.
Learn More About Taco SR504-4
Taco - SR504-4 - Zone Switching Relay - Four Zones - 1 Priority Zone
7% Buy This
$231.23
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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 may apply, see our full shipping policy for more details.
Learn More About Taco SR501-4
Taco - SR501-4 - Zone Switching Relay - One Zone
$82.96
In-Stock
Learn More About Burnham 103192-01
Burnham Alpine Alp Boilers RJ Cable Splitter
$37.00
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Learn More About Honeywell HPSR104
$278.00
In-Stock
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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 may apply, see our full shipping policy for more details.
Learn More About Burnham 105648-01
$572.00
In-Stock
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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 may apply, see our full shipping policy for more details.
Learn More About Tekmar 346
tekmar - Designer Series - 346 - Power Manager - Compatible with tekmarNet 4 - Three Auxiliary Pumps - Four Demands
$824.00
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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 may apply, see our full shipping policy for more details.