Line-voltage · LUX

LUX ELV4 Line-Voltage Thermostat

Line-voltage, 120/240 V

At a glance

Suited to baseboard and wall heaters.

Strong points
Wi-Fi control.
Weak points
Household-voltage wiring.
Best match
Baseboard and wall heaters.
Works with
application
Connectivity
Wired
Schedule
Programmable
Display
LCD
Power
Battery Powered
Max load
2 W
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Updated October 2026

Will it work with your system?

Works well with

  • Baseboard and wall heaters
  • Room-by-room electric heat

Check first if you have

  • Furnaces, boilers and heat pumps (24 V)
  • Loads above its rating

What it controls

The LUX ELV4 Line-Voltage Thermostat is a line-voltage for electric heat that runs at line voltage (120/240 V per the maker).

The listing doesn't state a maximum load. Don't install it until you've confirmed the rating covers your heaters' total watts. How to work out the load.

Connectivity: Wired, so the schedule and setpoint can be changed from a phone.

Line voltage can kill: switch the breaker off and confirm it's dead before touching the wires, and use a licensed electrician if you're unsure. Line vs low voltage.

Also on the listing: dimensions of 2.4 in (D) x 2.8 in (W) x 4.7 in (H) and a lcd.

Warranty, per the listing: 1 year.

Compatibility and specs

These come from the maker's listing for this exact model; the source of each is marked. Anything the maker leaves out is marked not stated.

Model numberELV4Retailer
Model nameELV4Retailer
Dimensions (seller)2.4"D x 2.8"W x 4.7"HRetailer
Works withapplicationRetailer
Features (seller)Line VoltageRetailer
ConnectivityWiredRetailer
PowerBattery PoweredRetailer
Voltage120 V AC, 240 V ACRetailer
DisplayLCDRetailer
Mounting / installationWall MountRetailer
Max load2 WRetailer
MaterialPlasticRetailer
Warranty1 year.Retailer
ScheduleProgrammableRetailer

Strong points and weak points

Strong points

  • Wi-Fi control
  • 120/240 V

Weak points

  • Household-voltage wiring
  • Max load not stated
  • One thermostat per heater circuit

Wiring and install notes

  • Compatibility statements are the maker's own. Confirm with the maker's compatibility checker, turn the power off before wiring, and leave line-voltage and furnace work to a licensed electrician or HVAC technician.

Thermostats to compare it with

FAQ

How many heaters can the LUX ELV4 Line-Voltage Thermostat control?
The listing doesn't state a maximum load; check the rating plate before wiring.
Can the LUX ELV4 Line-Voltage Thermostat run a furnace or heat pump?
No. It's a line-voltage thermostat for electric resistance heat; central systems use 24-volt thermostats.

Other line-voltage thermostats with similar wiring

All line-voltage thermostats in one grid · Every LUX control listed

Our take

Suited to baseboard and wall heaters.

Where to get it

The link goes to this exact model's listing. Check that the box includes the trim plate or C-wire adapter you need, and confirm your wiring with the maker's compatibility checker before you order.

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure