Review of automation with the ZXT 800

Controlling your HVAC and AV via Home Assistant: ZXT-800 IR Blaster

Beyond thermostats and remote controls: ZXT-800 review

Integrating a home's heating and cooling with an automation system has often been a challenge. The same goes for incorporating a wide range of audiovisual equipment. So, does the ZXT-800 from Remotec change the game? Is it the ultimate solution for integrating any remote-controlled device into your smart home?

What is the ZXT 800?

The ZXT-800 is a Z-Wave to infrared converter. It pulls infrared codes from an extensive database or learns them from your existing home remote controls. Then, it translates these codes into Z-Wave commands, allowing your Z-Wave automation system to control HVAC split systems, audiovisual equipment, and other remote-controlled electronics.

What is the ZXT 800 compatible with?

Through a smartphone app, the ZXT-800 is compatible with:

  • 27,000 remote control codes from over 8,000 brands of audiovisual systems
  • 3,000 remote control codes from 500 different brands of heating and cooling systems

Using it with Home Assistant

Setting up the ZXT-800 starts with powering it up using either 3 AAA batteries or a Mini USB connection. Integrating it with the open-source Home Assistant software is straightforward, thanks to the Z-Wave JS add-on and the Atrim Stick. Both the Atrim Stick and the ZXT-800 are based on the Z-Wave 800 series, maximizing the potential of Remotec's Z-Wave Plus V2 capabilities.

Setting up competing IR blasters in the Z-Wave ecosystem has often been a headache. Remotec has simplified this process through a smartphone app available on both Google Play and Apple App Stores. The app facilitates easy Bluetooth pairing and device setup, allowing you to program the ZXT-800 with the electronics you have, specifying their brand and version. This eliminates the complexity and the need to master Z-Wave command classes.

Control and automation

Once set up, you can control the ZXT-800 via its app or through Home Assistant's interface. But the real magic lies in automation. Using Home Assistant, it takes just a minute to set up a simple automation flow. For example, when the room temperature exceeds a set point, your cooling system activates. You can also set the desired temperature, cooling system mode, and fan speed, provided they're all supported by your split system.

While the ZXT-800 makes temperature measurements easy with its built-in temperature and humidity sensor, optimal use involves integrating it with other sensors:
  • use open / close sensors to automatically turn off heating or cooling whenever a door or window is left open
  • use a multisensor to automatically turn off a HVAC system whenever a room isn't occupied or use its temperature sensor for greater thermostat accuracy


The ZXT-800 offers seamless integration with Home Assistant and simplifies what is typically a complex IR blaster setup. While it may not halve your energy bill immediately, its potential for cost savings, especially when combined with other sensors and data points, is undeniable.

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