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White rectangular low-voltage thermostat, vertical mount, mercury-free

Emerson Climate Technologies

Emerson Climate Technologies 1E30N-910 Low Voltage Thermostat

SKU CH-WTHX-2PKYC

Low-voltage thermostat for millivolt heating systems, 20 to 30 V AC, mercury-free, 50 to 90 °F range

  • Product typeThermostat Accessories
  • Product colorWhite
  • Low-voltage 20 to 30 V AC operation suits millivolt heating systems
  • Mercury-free design meets NEC Class II safety standards
  • Simple two-terminal R and W wiring for quick installation
  • 50 to 90 °F control range covers residential comfort needs
  • Vertical mount fits standard 4 1/2 in by 2 3/4 in wall openings

Emerson Low Voltage Thermostat 1E30N-910

This non-programmable analog thermostat provides basic temperature control for low-voltage heating systems. It operates on 20 to 30V AC and supports 750mV millivolt systems such as gas fireplaces or floor furnaces. The unit is mercury-free and mounts vertically on a wall.

Check voltage and wiring before ordering

Verify your existing system supplies 20 to 30V AC and uses only R and W terminals with no cooling or fan wires. The thermostat has no system switching, fan switching or automatic changeover and is not dual-transformer compatible. It fits single-stage heat-only or millivolt applications.

Steady temperature regulation under continuous use

The analog mechanism maintains the set point between 50 and 90 degrees Fahrenheit without digital drift during long heating cycles. Hardwired power eliminates battery failure risk. Mercury-free contacts meet NEC Class II standards for reliable operation over extended periods.

How it compares

Measured against everything we stock in Thermostats & Thermostat Accessories, at today’s prices. Recalculated every night.

Price $23.99
Cheaper than about 80% of the 286 comparable items (median $78.49).

Specifications

Product
Brand nameWhite Rodgers
Product typeThermostat Accessories
Product colorWhite

Questions about this item

What comes with the Emerson 1E30N-910 thermostat and what must be purchased separately?

The unit includes the low-voltage thermostat body with terminals R and W. Wiring, mounting screws and a power source of 20 to 30 V AC are not included and must be supplied by the installer.

How do I decide between the millivolt-compatible version and a standard 20 to 30 V AC model for my system?

This model works with both 750 mV millivolt systems and 20 to 30 V AC circuits, so a single version covers both applications; choose it when your heating equipment uses either power method.

What does the 50 to 90 degree Fahrenheit control range mean once the thermostat is installed?

It sets the adjustable temperature span the thermostat can maintain; the dial or lever will allow selection anywhere between 50 and 90 degrees Fahrenheit for the connected heating system.

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