Apollo Automation
Apollo Automation MSR-2 mmWave Multisensor
- Native integration
- Local control
- Wi-Fi
- Bluetooth
Prices verified November 2026
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Choose the CO2 variant for a bedroom: it pairs mmWave presence with CO2, humidity, temperature, pressure, light and UV in one USB-powered unit, so you can watch overnight CO2 and trigger a fan or window nudge without a second sensor. It is a 1-target LD2410B, so it is a presence-and-tuning sensor rather than a tracker, and the Standard version only measures pressure and temperature, with humidity and CO2 on the optional module. It is open-source ESPHome hardware that The Pi Hut stocks in the UK (£38.70 for Standard when checked); Apollo's own shop is US-based, with international free shipping only over $230.
What can Home Assistant control on the Apollo Automation MSR-2 mmWave Multisensor?
| Control | Type | What it does |
|---|---|---|
| mmWave presence | Binary sensor | LD2410B radar presence with tuning controls to filter false positives. |
| CO2 | Sensor (CO2 variant) | SCD40 CO2 reading, the most relevant number for stuffy bedrooms. |
| Temperature / pressure | Sensors | DPS310 temperature and pressure; humidity only with the CO2 module. |
| Illuminance / UV | Sensors | LTR-390UV light and UV readings. |
| RGB LED and buzzer | Light and buzzer | Controllable status pixel and piezo for notifications; the buzzer is best left off in a bedroom. |
Plug in, join the 'MSR2 Hotspot' Wi-Fi network, enter credentials and HA discovers it through ESPHome; firmware is open source on Apollo's GitHub. The ESPHome device page also lists a piezo buzzer, an RGB pixel and Bluetooth proxy. Humidity only appears with the optional CO2 module. There is no sleep-specific entity set, so a bedroom use means presence, CO2 and temperature graphs rather than any sleep-quality score. The £38.70 Pi Hut price was for the Standard version; the CO2 variant price was not read.
Specs
| extras | RGB pixel, piezo buzzer, back expansion slot (GPIO and rear USB-C add-ons sold separately) |
|---|---|
| environment | LTR-390UV light/UV, DPS310 temperature/pressure; optional SCD40 CO2 with humidity |
| sensor type | HLK-LD2410B mmWave radar (1 target) |
| connectivity | Wi-Fi, Bluetooth (proxy), ESPHome firmware |
How does the Apollo Automation MSR-2 mmWave Multisensor compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| Apollo Automation MSR-2 mmWave Multisensor (this product) | £38.7 | Wi-Fi, Bluetooth | Yes | Native |
| Aico Ei3016 (Mains Optical Smoke Alarm) | £53.89 | Wi-Fi | Cloud | HACS |
| Airthings View Plus | £259 | Wi-Fi, Bluetooth | Cloud | Native |
| Aqara Door and Window Sensor P2 | £23.99 | Matter, Thread | Yes | Works with HA |
Frequently asked questions
- Does the Apollo Automation MSR-2 mmWave Multisensor work with Home Assistant locally?
- Yes. The Apollo Automation MSR-2 mmWave Multisensor is controlled locally in Home Assistant through a built-in Home Assistant core integration (esphome), so it keeps working if your internet connection or the Apollo Automation cloud goes down. Control and state updates stay on your own network.
- Which protocol does the Apollo Automation MSR-2 mmWave Multisensor use, and do I need a hub?
- The Apollo Automation MSR-2 mmWave Multisensor uses Wi-Fi and Bluetooth. To pair it with Home Assistant you need no hub — it joins your Wi-Fi network directly; or a Bluetooth adapter on your Home Assistant host or an ESPHome Bluetooth proxy. Apollo Automation's own hub is not required when you integrate through a built-in Home Assistant core integration (esphome).
- How much does the Apollo Automation MSR-2 mmWave Multisensor cost in the UK?
- The lowest price we have listed for the Apollo Automation MSR-2 mmWave Multisensor is £38.70 at The Pi Hut. Prices were last checked in November 2026 and change often, so confirm on the retailer's page before buying.
Apollo Automation
Apollo Automation MSR-2 mmWave Multisensor
£38.70 at The Pi Hut