We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
White rectangular low-voltage thermostat, hardwired, horizontal or vertical mount

Dayton

Dayton 4PU46 Low Voltage Thermostat 20-30VAC Hardwired

SKU CH-9Z65-0H53Y MPN 4PU46

Low-voltage thermostat for cool-only systems, hardwired at 20-30VAC with a 50-90°F control range and mercury-free design

  • TypeLearning Thermostats
  • ColorWhite
  • Precise temperature control from 50 to 90 degrees Fahrenheit
  • Hardwired 20 to 30 VAC power for reliable operation
  • Mercury-free design meets modern environmental standards
  • Horizontal or vertical mounting fits any installation
  • Terminal designations G, R, Y simplify wiring connections

Low-Voltage HVAC Thermostat

The Dayton 4PU46 is a hardwired thermostat designed for conventional cool-only systems. It operates on 20 to 30V AC power and mounts horizontally or vertically. The unit provides a control range from 50 to 90 degrees Fahrenheit.

Installers and maintenance teams

This thermostat suits technicians wiring new or replacement low-voltage controls in commercial or residential HVAC equipment. It is not for systems that require automatic changeover or dual-transformer compatibility.

Terminal set G R Y

The terminal block uses designations G, R and Y with system switching set to cool-off and fan switching set to auto-on. This layout determines whether the thermostat matches the existing control wiring.

Highlights

  • Precise temperature control from 50 to 90 degrees Fahrenheit
  • Hardwired 20 to 30 VAC power for reliable operation
  • Mercury-free design meets modern environmental standards
  • Horizontal or vertical mounting fits any installation
  • Terminal designations G, R, Y simplify wiring connections

Specifications

BrandDayton
Model4PU46
TypeLearning Thermostats
ColorWhite

Questions about this item

Does the 4PU46 draw noticeable power or generate heat when it runs continuously on a 20 to 30V AC circuit?

The thermostat is hardwired for low-voltage 20 to 30V AC operation and uses a mercury-free design, so power draw and heat output are minimal during all-day use.

Which system wires must already be in place for the 4PU46 to control a cool-only HVAC unit?

You need existing G, R and Y conductor connections plus a system switch for Cool-Off and a fan switch for Auto-On to match the thermostat’s terminal designations.

Will the 4PU46 work alongside an older dual-transformer or 750 mV millivolt system I want to keep?

No — the 4PU46 is not compatible with dual-transformer setups or 750 mV millivolt systems, so those older configurations cannot be used with this thermostat.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.