Taco SR504-EXP-4 Switching Relay, 4 Zone, Expandable
Amazon Price as of 04/03/2025 20:14 GMT+00:00
-11%
$210.95
$237.95
Deal Detector and Price History
We analyze price history to spot good deals
Include Prime Price
🎉 Great Deal
average price $237.07
$26.12 cheaper than average
$218.92
$246.75
Product Description
Product Description
We've enhanced our complete line of Zone Valve Controls with the features and styling you've been asking for. Whether you're looking for switching relays, zone valve controls, priority zoning circulators, or fan controls, Taco has everything you need. Together with Taco Zone Valve Controls, thermostats, the “00” family of circulators, and a host of add-on controls, we offer the highest quality and broadest selection of zoning products.
From the Manufacturer
Taco Switching Relays combine clearly-labeled PC board layouts with advanced features that allow you to completely customize your system. And whether you're using basic priority switching, Taco Plug-In PowerPort Cards or add-on power controls, tailoring the system has never been easier. External indicator lights give you instant diagnostic feedback, making service calls or new installation start-ups a snap. All switching relays are UL listed, use standard "ice cube" replaceable relays and are compatible with conventional and programmable thermostats. For larger jobs, switching relays can be expanded up to 20 zones with priority. With the exclusive Taco PowerPort Plug-In Cards, you can easily add such features as post purge, priority protection and pump exercise. Any expandable switching relay can also interface with the Boiler Reset Control and Injection Mixing Add-On Power Controls. Mix-and-match as needed to customize the system.
• Front diagnostic lights
• Switchable priority
• Built-in priority protection
• Simplifies wiring
• 100% factory tested
Reviews
Review AI Summary
🔥 Top Taco deals you shouldn’t miss!
Related Products
Great Stuff 99108860 Smart Dispenser Big Gap Filler, No Size, Cream, 12 Ounce
-19% $9.37
View at Amazon
3M All Weather Flashing Tape 8067, 6 in x 75 ft, 1 Roll, Adhesive Backed Split Liner, Prevents Moisture Intrusion, Waterproof Flashing Seals Doors, Windows, Openings in Wood Frame Construction
-25% $39.99
View at Amazon
Comfort Zone Garage Heater, 5,000-Watt, Ceiling Heater, 3 Heat Settings, 240V Electric Garage Heater for Indoor Use, Ceiling Mounted Shop Heater, Overheat Protection, ETL Listed, Grey
-14% $99.00
View at Amazon
Comfort Zone Hard-Wired Ceiling Mount Garage Electric Space Heater, Fan-Forced, 5,000 watt, 240 volt, Overheat Protection, Thermal Cut-Out Switch, Ideal for Workshop & Garage, ETL Compliant, CZ220BK
-22% $99.00
View at Amazon
Mr. Heater MH60QFAV 60,000 BTU Portable Propane Forced Air Heater, 19.75 x 11.50 inches, black
-36% $92.79
View at Amazon
Dr Infrared Heater DR-988A Garage Shop 208/240-Volt, 4800/5600-Watt Heater with 6-30R Plug
-8% $121.73
View at Amazon
Comfort Zone Electric Hard-Wired Digital Fan-Forced Ceiling Mount Space Heater with Remote, 6,000 Watt, 240 Volt, Overheat Protection, Digital Thermostat, & 12-Hour Timer, Garage or Workshop, CZ225ER
-18% $125.09
View at Amazon
Simply 12x30x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 11.75"x29.75"x0.75") DUST, Pet, & Allergy Control
-16% $39.97
View at Amazon
Simply 20x24x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 19.75"x23.75"x0.75") DUST, Pet, & Allergy Control
-15% $33.96
View at Amazon
Simply 18x18x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 17.75"x17.75"x0.75") DUST, Pet, & Allergy Control
-15% $33.96
View at Amazon
Simply 12x24x1 Air Filter, MERV 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 11.75"x23.75"x0.75") DUST, Pet, & Allergy Control
-15% $32.26
View at Amazon
Simply 10x30x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 9.75"x29.75"x0.75") DUST, Pet, & Allergy Control
-22% $33.95
View at Amazon
Simply 16x25x2 Air Filter, MERV 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 15.75"x24.75"x1.75") DUST, Pet, & Allergy Control
-14% $47.97
View at Amazon
Simply 14x14x1 Air Filter, MERV 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 13.75"x13.75"x0.75") DUST, Pet, & Allergy Control
-20% $26.97
View at Amazon
Simply 14x25x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 13.75"x24.75"x0.75") DUST, Pet, & Allergy Control
-15% $33.11
View at Amazon
Simply 14x30x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 13.75"x29.75"x0.75") DUST, Pet, & Allergy Control
-13% $37.95
View at Amazon
Simply 20x20x4 Air Filter, MERV 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 19.75"x19.75"x3.75") DUST, Pet, & Allergy Control
-11% $79.97
View at Amazon
Simply 20x25x4 Air Filter, MERV 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 19.75"x24.75"x3.75") DUST, Pet, & Allergy Control
-12% $69.97
View at Amazon
Simply 25x25x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 24.75"x24.75"x0.75") DUST, Pet, & Allergy Control
-15% $49.28
View at Amazon
Simply 10x14x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 9.75"x13.75"x0.75") DUST, Pet, & Allergy Control
-23% $46.74
View at Amazon
