Smart line-voltage ยท Mysa

Mysa BB.2.0.01.NA Smart Line-Voltage Thermostat

Smart line-voltage, 240 V, 3,800 W

At a glance

Shortlist it for app control of baseboard heat.

Strong points
Rated 3,800 W.
Weak points
Household-voltage wiring.
Best match
App control of baseboard heat.
Connectivity
WiFi, NFC
Schedule
Programmable
Display
LED
Power
Corded Electric
Voltage
240 V
Max load
3800 W
Prices change often; the button shows today's price.

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Updated October 2026

Will it work with your system?

Works well with

  • App control of baseboard heat
  • 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 Mysa BB.2.0.01.NA Smart Line-Voltage Thermostat is a smart line-voltage for electric heat that runs at line voltage (240 V per the maker).

Its maker rates it for 3,800 W. At 240 V that covers heaters totalling about 3,800 watts (watts = amps × volts). Check your heaters' load.

Connectivity: WiFi, NFC, 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 0.8 in (D) x 3.5 in (W) x 5.1 in (H), a weight of 510 g and a led.

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 numberBB.2.0.01.NARetailer
Model nameMysa Smart Thermostat for Electric Baseboard Heaters V2Retailer
Dimensions (seller)0.8"D x 3.5"W x 5.1"HRetailer
Works withAmazon Alexa, Android, Apple HomeKit, Google Assistant, iOSRetailer
Features (seller)Audible Touch Feedback, Adaptive Display Technology, Energy Insights, Geofencing, SchedulingRetailer
ConnectivityWiFi, NFCRetailer
PowerCorded ElectricRetailer
Voltage240 VRetailer
DisplayLEDRetailer
Mounting / installationWall MountRetailer
Max load3800 WRetailer
Product weight510 gRetailer
MaterialPlasticRetailer
Works with systemsworks with 120-240V electric baseboards and electric fan-forced heaters and requires one neutral or second live wireRetailer
ScheduleProgrammableRetailer

Strong points and weak points

Strong points

  • Rated 3,800 W
  • Wi-Fi control
  • 240 V

Weak points

  • Household-voltage wiring
  • 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 Mysa BB.2.0.01.NA Smart Line-Voltage Thermostat control?
As many as fit within its rating of 3,800 W: add the heaters' watts and divide by the voltage.
Can the Mysa BB.2.0.01.NA Smart 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

Our take

Shortlist it for app control of baseboard heat.

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