Aeotec TriSensor 8 Review: A Compact Z-Wave 3-in-1 With a Great Light Sensor, but Poor Temperature Accuracy and Short Lifespan
This small Z-Wave motion, light and temperature sensor has better range and a far more accurate light sensor than the MultiSensor 6, but its temperature reads several degrees high, it needs a custom driver on SmartThings, and some units fail within a couple of years.
The Aeotec TriSensor 8 is a compact Z-Wave 3-in-1 sensor (motion, light and temperature), and owners rate it around 3.9 stars, reflecting genuine strengths alongside real flaws. On the positive side, it's small and discreet (nicer-looking than the MultiSensor 6, with a diffused LED behind a translucent face), its motion range is noticeably better than the MultiSensor 6, and its light (lux) sensor is far more accurate, making it excellent for triggering lights only when it's actually dark. It has adjustable sensitivity (useful for filtering out pets), a configurable/disable-able motion LED, works with SmartThings, Hubitat, OpenHAB, HomeSeer and other Z-Wave hubs, and is cheaper than the MultiSensor 6. But three issues drag it down. First, temperature accuracy is poor, owners repeatedly measure it reading roughly 5 degrees F too high, which makes it useless for freeze detection. Second, lifespan concerns: several units failed within about 1.5 to 2 years, often getting stuck constantly reporting motion (rendering it useless) despite the $60+ price. Third, SmartThings integration is awkward, it requires a custom device handler / Edge driver (not natively supported), and some owners hit unreliable detection, dropped controller communication, or notifications that stop working. It also uses a CR123A battery (no USB option, unlike the MultiSensor 6), and the pairing instructions are confusing. For a good motion and light sensor on a Z-Wave hub, it works well, just don't rely on its temperature reading.
- Z-Wave motion and light-level automations
- SmartThings/Hubitat/OpenHAB/HomeSeer users
- A more accurate light sensor than the MultiSensor 6
- Compact, discreet placement
Pros
- Better motion range and a far more accurate light sensor than the MultiSensor 6
- Compact, discreet, with an adjustable/disable-able LED and adjustable sensitivity
- Works across Z-Wave hubs (SmartThings, Hubitat, OpenHAB, HomeSeer, Vera); good battery life
- Cheaper than the MultiSensor 6
Cons
- Temperature reads several degrees too high (useless for freeze detection)
- Short lifespan for the price (some fail within ~1.5-2 years, stuck reporting motion)
- SmartThings needs a custom/Edge driver; integration can be unreliable
- CR123A only (no USB power); bright motion LED; confusing pairing instructions
Who is the Aeotec TriSensor 8 for?
This is a compact Z-Wave 3-in-1 sensor combining motion, light (lux) and temperature detection, powered by a CR123A battery. It requires a Z-Wave hub and works with SmartThings, Hubitat, OpenHAB, HomeSeer, Vera and other Z-Wave controllers, plus Home Assistant. It's ideal for Z-Wave users who want motion and accurate light-level sensing in a small package, especially those who found the MultiSensor 6's range or light sensor lacking. It's not for you if you need reliable temperature readings, humidity/UV/vibration sensing (get the MultiSensor 6/7), a USB-powered option, or the longest-lasting hardware.
What buyers love
The upgrades over the MultiSensor 6 stand out: motion detection range is noticeably longer (one owner had to move it because it triggered when people merely walked past a doorway), and the light sensor is far more accurate, which owners value for reliably using ambient light as an automation trigger. It's compact and discreet, arguably better-looking than the MultiSensor 6, with a diffused multi-color LED you can reconfigure or disable. Sensitivity is adjustable (0-11), handy for avoiding pet triggers, and it works across Z-Wave hubs (SmartThings, Hubitat, OpenHAB, HomeSeer, Vera). Battery life is solid (well over a year for many), it's cheaper than the MultiSensor 6, and it acts as a presence sensor by default. When it's working and correctly configured, owners find it reliable and responsive.
What to know before you buy
Three problems drive the mixed rating. First, temperature accuracy: owners repeatedly find it reads about 5 degrees F too high (one measured 78.8F when two other sensors 12 inches away agreed on 74F), and offsets don't always help, so it's unreliable for temperature-critical uses like freeze detection. Second, lifespan: several units failed within roughly 1.5 to 2 years, typically getting stuck constantly detecting motion (making it useless), which is disappointing at a $60+ price, some owners switched to simpler, cheaper motion-only sensors. Third, SmartThings integration is fiddly: it isn't natively supported and needs a custom device handler / Edge driver found online, and owners report unreliable detection, dropped controller communication (needing a battery reset), or notifications that silently stop working. It also uses a CR123A battery (no USB power option, unlike the MultiSensor 6, and it won't work with the 1.5V alkaline of the same size), the bright green motion LED can be distracting at night (though disable-able), and the pairing instructions are confusing (a hidden button and a 5-digit code).
Is the Aeotec TriSensor 8 worth it?
It depends on what you need. As a compact Z-Wave motion sensor with a genuinely good light sensor and better range than the MultiSensor 6, it's capable and well-suited to lighting automations, which is why it still earns a 3.9-star average. But go in aware of the caveats: temperature accuracy is poor (unusable for freeze detection), some units fail within a couple of years, SmartThings needs a custom/Edge driver and can be unreliable, and it's CR123A-only with a bright LED. If you want reliable motion and light sensing on a Z-Wave hub and won't depend on its temperature reading, it's a reasonable pick; if you need dependable temperature, extra sensors, or long-term durability, consider the MultiSensor line or a simpler motion-only sensor.
Frequently asked questions
Is the temperature sensor accurate?
Not really. Owners repeatedly find it reads about 5 degrees F too high (for example 78.8F when nearby sensors read 74F), and offset adjustments don't always resolve it. It's fine for rough trends but unreliable for anything precise, especially freeze detection, so don't rely on its temperature reading.
How does it compare to the MultiSensor 6?
The TriSensor 8 has longer motion range and a much more accurate light sensor, plus a more discreet design and lower price. However, it drops humidity, UV and vibration sensing, and it lacks the MultiSensor 6's USB power option, running only on a CR123A battery. Choose based on whether you need those extra sensors and USB power.
Does it work with SmartThings out of the box?
Not natively. It requires a custom device handler / Edge driver that you'll need to find online (from Aeotec's support page or the community), and pairing can take a few tries. Even then, some owners report hit-and-miss detection or dropped communication, so SmartThings integration can be fiddly.
How long does it last?
Battery life is good (well over a year for most), but hardware longevity is a concern: several owners report units failing within roughly 1.5 to 2 years, often getting stuck constantly detecting motion, which makes them useless. At a $60+ price, that short lifespan is a notable drawback for some buyers.
Does it need a hub, and what powers it?
Yes, it's a Z-Wave device and requires a Z-Wave hub (SmartThings, Hubitat, OpenHAB, HomeSeer, Vera, etc.). It's powered by a CR123A 3V lithium battery with no USB option, and note it won't work with the same-size 1.5V alkaline, so use the correct CR123A.







