sensor

SONOFF SNZB-03P

budget local: excellent Zigbee

Price: $16.50 verified Sep 6, 2026
HA fit: excellent
Works offline: yes
Setup: easy
Hub needed: yes

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SONOFF SNZB-03P - One of the cheapest Zigbee motion sensors available, making whole-house motion detection affordable

Quick verdict

A cheap, reliable Zigbee PIR motion sensor. It does one thing - detects motion - and does it well. The P version improves range and battery over the original. At this price you can scatter them around the house for motion-activated lights without thinking twice about the cost. Just remember it is basic PIR, not presence detection.

Standout: One of the cheapest Zigbee motion sensors available, making whole-house motion detection affordable.

Notes last checked May 31, 2026.

Compatibility snapshot

Home Assistant excellent

Apple Home none

Google Home none

Alexa none

Works offline yes

Setup easy

Extra hub needed yes

Power battery

Local control facts

Home Assistant: zha integration, Local Polling (home-assistant.io, checked Sep 10, 2026)
Zigbee2MQTT: supported device, listed as SONOFF SNZB-03P (Zigbee PIR sensor) (zigbee2mqtt.io, checked Sep 10, 2026)

Why it stands out

very cheap for a Zigbee motion sensor - easy to put one in every room
reliable PIR detection with an adjustable motion timeout (5 to 60 seconds) in zigbee2mqtt; there is no sensitivity setting
improved battery life and range over the older SNZB-03

Reasons to hesitate

requires a Zigbee coordinator - no standalone use
PIR sensors have a cooldown period - not instant for repeated triggers
built-in light sensor only reports bright/dim, not precise lux values like some pricier competitors

Best for

Home Assistant users building motion-activated lighting automations on a budget
covering multiple rooms with motion sensors without spending a fortune

Avoid if

you do not have a Zigbee coordinator
you need mmWave-level presence detection for occupancy (this is basic PIR)

Privacy and local-control notes

Pure Zigbee device with no cloud component. Fully local when paired with a Zigbee coordinator.

Home Assistant support: supported · integration path: zigbee2mqtt / ZHA.

Buying reality check

Price notes: About $15 on Amazon (verified 2026-08-28).

Verified price reads: lowest seen $14.85, latest $16.5 on Sep 6, 2026.

Sep 6, 2026$16.5amazon
Aug 28, 2026$14.85amazon

Compare side by side: see sensor comparisons →

Verified against

The compatibility notes above have not been through the source audit yet. The manufacturer's page is here; the notes were last checked May 31, 2026.

Spotted something wrong? Report an error on this page and I will check it against the source and fix it.

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