sensor

SONOFF SNZB-03P

budget local: excellent Zigbee

Price: $16.50 verified Nov 5, 2026
HA fit: excellent
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 Oct 26, 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 Oct 10, 2026)
Zigbee2MQTT: supported device, listed as SONOFF SNZB-03P (Zigbee PIR sensor) (zigbee2mqtt.io, checked Oct 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: $16.50 on Amazon and at SONOFF's US store on October 26, 2026, in stock at both (about $15 on Amazon on 2026-08-28).

Verified price reads: lowest seen $13.2, latest $16.5 on Nov 5, 2026.

Nov 5, 2026$16.5amazon
Oct 29, 2026$16.5amazon
Oct 22, 2026$16.5amazon
Oct 15, 2026$16.5amazon
Oct 8, 2026$16.5amazon
Oct 7, 2026$13.2amazon
Oct 6, 2026$13.2amazon
Oct 5, 2026$16.5amazon

Compare side by side: see sensor comparisons →

What changed for this product

Oct 10, 2026 · Brief

Black Friday smart home deals for Home Assistant: the prices to beat

Black Friday 2026 smart home deals for Home Assistant and local-control homes: the lowest price I've recorded for 100+ Zigbee, Z-Wave, Matter and Wi-Fi devices.

From the change log and the news briefs that name this product.

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 Oct 26, 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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