Hardware Matrix

Is Z-TRM3 Z-Wave Thermostat Compatible with Home Assistant (Z-Wave JS)?

Verdict Badge
VERDICT: [ COMPATIBLE (MANUAL CONFIG REQUIRED) ]
Protocol: Z-Wave Plus
Bridge Needed: NO
⚡ DANGER: MAINS VOLTAGE PRESENT

This installation carries line voltage capable of causing severe electric shock, injury, or fire. Disconnect power at the breaker before wiring, verify with a non-contact voltage tester, and consult a qualified electrician if you are not confident working with mains circuits. Do not rely on this page as your only reference — confirm terminal assignments against the manufacturer's own documentation.

Electrical Specifications

Always confirm pin assignments against the manufacturer datasheet before wiring.

📖 Source: Heatit Z-TRM3 datasheet
Power Input230V AC
Current Profile16A / 3600W max load; contactor required above this
Ingress ProtectionIP21

Compatibility Overview

Reliable Z-Wave thermostat for direct integration with Home Assistant Z-Wave JS.

Wiring

Terminal assignments for this device

Terminal diagram not shown.

This device carries mains voltage, and its terminal markings vary by model and revision. Publishing a generic AC terminal diagram here would risk you wiring live conductors from a drawing that does not match the part in your hand — so we do not print one. Use the manufacturer's own installation sheet for terminal identification.

Technical Specification Matrix

Feature / Attribute Specification / Status
Hardware Protocol Z-Wave Plus
Bridge Required NO
Border Router Needed None (Z-Wave Controller)
Hardware Capabilities & Peripherals
Thermostat (Climate) Temperature Energy (kWh)

Discovered by the integration at pairing time. Which of these appear depends on your integration and its version.

Pairing Complexity Advanced
Factory Reset Instruction Press center button for 10 seconds, navigate to OFF, press right button for 5 seconds until rES shows.

Step-by-Step Pairing Guide

1

Factory Reset Device

Press center button for 10 seconds, navigate to OFF, press right button for 5 seconds until rES shows.

2

Initialize Pairing Mode on Home Assistant (Z-Wave JS)

Open Home Assistant (Z-Wave JS) administration console, navigate to Integrations / Add Device, and start pairing scanner.

3

Confirm Entity Binding & State Verification

Verify that primary entities (Thermostat (Climate), Temperature, Energy (kWh)) report live state changes inside Home Assistant (Z-Wave JS).

🛠️ Correction & Field Reports

Report an Error or Share What You Found in Practice

Does the reset sequence not work, an entity not appear, or the compatibility verdict not match what you see with Z-TRM3 Z-Wave Thermostat? Report a correction to our index.

Frequently Asked Questions

Does Z-TRM3 Z-Wave Thermostat work without an internet connection?
100% Local.
How is Z-TRM3 Z-Wave Thermostat powered?
Mains powered (230V AC). Switches up to 16A / 3600W; a contactor is required above that.

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