Motion sensor

There are different types of motion sensors, each with its own strength:

Human presence sensor: also detects people who sit still
PIR beam sensor: looks in one direction
PIR all directions: covers a whole room from the ceiling
Battery powered PIR: the cheap option on AAA batteries

Human presence sensor

A human presence sensor.
It combines a PIR sensor, mmWave radar, and a brightness sensor. It’s wireless and 2x AAA battery powered.
The PIR sensor detects a person and activates the mmWave radar sensor. This helps avoid detecting animals. It can also detect people who are sitting still or lying in bed.

Zigbee Human motion + presence + lux sensor - Hoazee

AliExpress | Amazon US | Amazon NL

Zigbee2MQTT ZG-204ZM

PIR beam sensor

The traditional motion sensors work with PIR, which stands for Passive InfraRed. This sensor detects objects that emit heat, like humans and animals.

I like the Aqara motion sensor a lot. It’s fast and reliable. With the stand you can point it in a specific direction, so it doesn’t ‘see’ the whole room.

Best optionZigbee motion sensor beam, WITH LIGHT SENSOR - Aqara

AliExpress | Amazon US | Amazon NL

Zigbee2MQTT RTCGQ11LM / P1

Alternative optionZigbee motion sensor beam - Xiaomi

AliExpress | Amazon NL

Zigbee2MQTT RTCGQ01LM

PIR all directions

If I want to cover a whole room, I use a different type of PIR sensor which you can stick in the center of the ceiling and it looks in all directions.