Bosch Motion Detector II [+M]

The little light gives it a purpose

Bosch's Motion Detector II [+M] is a good candidate for a hallway, pantry or sheltered entrance where you want both a motion trigger and a little light. Its integrated orientation light means you do not always need another smart bulb just to make a dark passage easier to navigate. At €49.95 in Bosch's German store on September 10, 2026, including VAT, that extra function helps justify the price.

The light is a small convenience, not a replacement for proper stair or obstacle lighting. Bosch also warns that using it frequently significantly affects the two AA batteries. The appeal is occasional guidance through a room, rather than leaving it to illuminate a busy corridor all night.

The 77 mm-tall body can stand on a shelf or attach to a wall or corner. Its white casing and broad sensor window remain visible, but there is no power cable to route.

The pet filter trades coverage for fewer unwanted triggers

Physical adjustments make this more flexible than a sealed sensor with one fixed view. You can mask part of the front detection area and cover the separate downward-facing lens. That can help avoid triggering on a pet or robot vacuum moving below the main view.

The tradeoff is real: covering the underside also removes detection directly beneath the sensor. It is not an intelligent promise to recognize every pet while catching every person. For an alarm installation, Bosch specifies particular mounting and tamper settings; a loose sensor on a shelf does not meet the same installation conditions.

Bosch advertises up to 13 m at a 90-degree angle under ideal conditions, but its manual recommends planning for up to 8 m for security use. We would judge it by the room and walking routes, not by the largest number on the box.

Matter gets more than a simple motion flag

The direct Matter connection can provide brightness and temperature readings, as well as supported control of the orientation light. That gives an automation more useful information than movement alone. What the app displays and allows as a trigger still matters.

There is a specific compromise: direct Matter uses the medium sensitivity and trigger-speed setting. Bosch's own system provides more adjustment and its integrated alarm and motion-light services. The device can use either that Zigbee connection or Matter over Thread; direct Matter needs the corresponding controller and Thread border router.

This is a passive infrared motion sensor. Even where an app labels its state as presence, we would not buy it to keep a desk lamp on solely because someone remains motionless at a computer.

A useful extra, if the room needs it

The IP55 enclosure suits sheltered outdoor use, but Bosch advises protection from direct sun, heavy rain and wind, and discourages outdoor alarm use because of false triggers. A covered entrance light is a more convincing job than monitoring an exposed garden for intruders.

Eve Motion is worth comparing for its adjustable settings in an Apple home. IKEA MYGGSPRAY is the simpler alternative for an ordinary indoor light trigger. Choose Bosch when the integrated light, temperature reading or physical detection masks will be used. Keep an existing sensor that already turns the right light on at the right time.