We are excited to introduce our latest line of professional Zigbee 3.0 sensors. While they share a sleek, identical design and run on convenient AA batteries, they serve two very different purposes in your Home Assistant ecosystem.
The Shared Foundation
Both sensors are built for the modern smart home enthusiast:
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Zigbee 3.0 Protocol: Fast, reliable, and energy-efficient.
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AA Battery Powered: No wiring required; easy to maintain.
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Built-in Illuminance Sensor: Integrated light level (lux) detection to trigger lights only when it's dark.
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Full Compatibility: Native support for Home Assistant and Zigbee2MQTT.
Model 1: The Zigbee PIR Motion Sensor
Technology: Passive Infrared (PIR)
How it works: This sensor detects changes in heat signatures (infrared energy) across its field of view. It is triggered by "active" movement, such as someone walking into a room or a pet running by.
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Best For: Hallways, stairs, and entryways where you only need to trigger an action when someone is moving through.
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Benefit: Extremely low power consumption and zero false triggers from inanimate objects.
Model 2: The Hybrid 24G Human Presence Sensor (Battery Edition)
Technology: PIR + 24GHz Millimeter Wave (mmWave) Radar
How it works: Standard radar sensors are power-hungry, but our Hybrid Dual-Mode technology solves this for battery operation:
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Energy Saving Mode: When the room is empty, the sensor uses PIR (low power) to wait for initial movement.
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Active Presence Mode: Once someone is detected, the 24G Radar kicks in. The radar can detect "micro-movements"—like the rise and fall of your chest while breathing or small hand movements while reading.
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The Result: The light stays on even if you are sitting perfectly still on the sofa or working at a desk.
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Best For: Living rooms, offices, and bathrooms where people sit still for long periods.
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Benefit: Eliminates the "false off" problem where lights turn off while you are still in the room, all while maintaining long battery life.
Comparison at a Glance
| Feature | PIR Motion Sensor | Hybrid Presence Sensor |
| Detection Tech | Infrared Only | PIR + 24G Radar |
| Detection Type | Walking / Large Movement | Sitting / Still / Breathing |
| Battery Type | AA Batteries | AA Batteries |
| Light Sensing | ✅ Included | ✅ Included |
| Power Strategy | Ultra-Low Power | Smart Hybrid Switching |
| Best Use Case | Transitional Areas | Stationary Areas (Sofa/Desk) |
Setup Tip for Zigbee2MQTT Users
Both sensors are recognized as full nodes in Zigbee2MQTT. You will be able to see the occupancy status, battery percentage, and illuminance (lux) levels directly in your dashboard, allowing for complex automations like:
"If Presence is detected AND Light level is below 20 lux, then turn on Office Lights."
Summary: Which one do you need?
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Choose the PIR Motion Sensor for simple "walk-through" automation and maximum battery longevity.
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Choose the Hybrid Presence Sensor if you want the "magic" of lights staying on while you read, watch TV, or work, without the need for a permanent power outlet.
