Installation Checklist

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Confirm you have an existing wall thermostat (not a dial on the heater)

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Check local building codes — some regions require a licensed electrician

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Verify your heater is compatible (Mysa Compatibility Checker)

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Note your heater's voltage (120V or 240V) and wattage

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Download the Mysa app (App Store or Google Play)

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Create a Mysa account

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Have your Wi-Fi network name and password ready (2.4 GHz)

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Medium Phillips screwdriver

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Voltage tester

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Wire strippers (if needed)

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Smartphone with Mysa app

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Turn off power at the circuit breaker

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Verify power is off with a voltage tester

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Take a photo of existing thermostat wiring

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Verify 4+ wires in gang box (check for tucked wires if only 2 visible)

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Disconnect and remove old thermostat

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Mount Mysa base plate to gang box

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Connect wires to Mysa terminals (L1, L2/N, Load)

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Confirm all wire connections are secure

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Attach thermostat to base plate (click into place)

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Restore power at breaker

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Confirm thermostat display turns on

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Open Mysa app and sign in

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Tap Add Mysa and select Mysa for Baseboards

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Stand within 1–2 meters of thermostat

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Connect via Bluetooth (V2/Lite) or Wi-Fi (V1)

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Connect to your 2.4 GHz Wi-Fi network

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Select your heater type (Baseboard, Fan-forced, or Radiant)

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Name your thermostat

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Complete any firmware updates

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Thermostat shows current room temperature

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Thermostat shows Online in app

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Raise setpoint — heater turns on

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Lower setpoint — heater turns off

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No error codes displayed