Sonoff · SNZB-04P

Sonoff SNZB-04P — door/window sensor, Zigbee

Name: Sonoff SNZB-04P — door/window sensor, Zigbee
Brand: Sonoff
SKU: SONOFF-SNZB-04P
Price: 299 MDL
Availability: InStock

299 MDLIn stock

Door & window sensors

Zigbee

Manufacturer images

299 MDLIn stock

What it needs to work

A compatible hub is required.

Suitable gateways and hubs

Buy with installation

Check compatibility

Connectivity: Zigbee
Tamper detection: Yes
Batteries or battery: 1 × CR2477

By day the SNZB-04P flips on the hallway light as the door opens; with the flat empty it turns guard and pushes an instant alert — automations call for a Zigbee 3.0 coordinator.

Hubs and systems: compatibility and limitations 12

SONOFF ZBBridgeConditional
Connection: Zigbee / eWeLink
The manufacturer lists this hub / connection method. Features depend on the integration and firmware; see the manufacturer matrix.
Supported functions: Device status (closed/open) · History record
Unsupported functions: Sensor forcibly removed · Remain closed/open for a set duration · Local scene · OTA
SONOFF ZBBridge-PSupported
Connection: Zigbee / eWeLink
The manufacturer lists this hub / connection method. Features depend on the integration and firmware; see the manufacturer matrix.
Supported functions: Device status (closed/open) · History record · Sensor forcibly removed · Remain closed/open for a set duration · Local scene · OTA
SONOFF ZBBridge-USupported
Connection: Zigbee / eWeLink
The manufacturer lists this hub / connection method. Features depend on the integration and firmware; see the manufacturer matrix.
Supported functions: Device status (closed/open) · History record · Sensor forcibly removed · Remain closed/open for a set duration · Local scene · OTA
SONOFF NSPanel ProSupported
Connection: Zigbee / eWeLink
The manufacturer lists this hub / connection method. Features depend on the integration and firmware; see the manufacturer matrix.
Supported functions: Device status (closed/open) · History record · Sensor forcibly removed · Remain closed/open for a set duration · Local scene · OTA
SONOFF iHostSupported
Connection: Zigbee / eWeLink
The manufacturer lists this hub / connection method. Features depend on the integration and firmware; see the manufacturer matrix.
Supported functions: Device status (closed/open) · History record · Sensor forcibly removed · Remain closed/open for a set duration · Local scene · OTA
Home Assistant (ZHA)Supported
Connection: ZHA
The manufacturer lists this hub / connection method. Features depend on the integration and firmware; see the manufacturer matrix.
Supported functions: Device status (closed/open) · History record · Sensor forcibly removed · Remain closed/open for a set duration · Local scene · OTA
Home Assistant (Zigbee2MQTT)Supported
Connection: Zigbee2MQTT
The manufacturer lists this hub / connection method. Features depend on the integration and firmware; see the manufacturer matrix.
Supported functions: Device status (closed/open) · History record · Sensor forcibly removed · Remain closed/open for a set duration · Local scene · OTA
Samsung SmartThings Hub V3Supported
Connection: Zigbee / SmartThings
The manufacturer lists this hub / connection method. Features depend on the integration and firmware; see the manufacturer matrix.
Supported functions: Device status (closed/open) · History record · Sensor forcibly removed · Remain closed/open for a set duration · Local scene
Aeotec Smart Home Hub V3Supported
Connection: Zigbee / SmartThings
The manufacturer lists this hub / connection method. Features depend on the integration and firmware; see the manufacturer matrix.
Supported functions: Device status (closed/open) · History record · Sensor forcibly removed · Remain closed/open for a set duration · Local scene
Philips HueNot supported
Connection: Zigbee
This manufacturer manual explicitly states no support.
IKEA gatewayNot supported
Connection: Zigbee
This manufacturer manual explicitly states no support.
FRITZ!Box Zigbee gatewayNot supported
Connection: Zigbee
This manufacturer manual explicitly states no support.

28 specifications from manufacturer documents

We deliver across Moldova. Availability, delivery timing and cost are confirmed with a manager before order fulfilment.

The right choice starts with specifications

Device passport

SKU: SONOFF-SNZB-04P · Document model: SNZB-04P

Specifications checked against the linked manufacturer documents.Checked 18 October 2026

Connectivity and compatibility9

Connectivity — what it means The wireless link or network the device uses. Wi-Fi connects straight to the router; Zigbee, Thread and Bluetooth Mesh work through a hub or gateway.	ZigbeeZigbee 3.0 (IEEE 802.15.4) [1]
Hub required — what it means Whether the device needs a separate hub, gateway or coordinator to work in a smart home. If so, it is sold separately unless stated otherwise.	Hub requiredAdded through a Zigbee gateway: SONOFF ZBBridge, ZBBridge-P, NSPanel Pro, iHost, ZBDongle-P/-E; third-party: Echo Plus 2nd, Echo Show 2nd, Echo 4th Gen, SmartThings Hub V3 / Aeotec V3 and other Zigbee 3.0 hubs. Philips, IKEA and FRITZ!Box gateways are not supported [1]
Wireless range — what it means The stated radio range, usually in open space. Walls and floors cut it noticeably.	70 mOpen area (SONOFF comparison chart) [4]
Home Assistant — what it means How the device connects to Home Assistant: a built-in integration, a Zigbee coordinator, Matter or the maker’s cloud integration.	Via a Zigbee coordinator / hubVia ZHA or Zigbee2MQTT with a Zigbee dongle (e.g. SONOFF ZBDongle-P/-E) [2]
Works without internet — what it means Whether the device keeps working over the local network or through a hub when the internet is down. Cloud features (remote access, voice assistants) need the internet.	YesLocal Zigbee scenes keep working without internet with ZBBridge-P/-U, NSPanel Pro, iHost (and in HA/SmartThings); not with the first-generation ZBBridge [2]
App — what it means The maker’s app used to set up and control the device.	eWeLinkVia the eWeLink cloud the status is available in Alexa, Google Home, SmartThings, Alice and IFTTT; in Apple Home through a Matter bridge [1]
Processor / radio chip — what it means The microcontroller or radio module inside, per the maker (for example ESP32). For firmware such as WLED and ESPHome it determines available features and whether the device can be re-flashed.	EFR32MG22 [1]
Matter support — what it means Whether the device supports the Matter standard, directly or through a bridge. Matter lets you add it to Apple Home, Google Home, Alexa and Home Assistant.	Via a bridgeApple Home via a Matter bridge (ZBBridge-U or eWeLink CUBE) [2]
Pairing window	180 s [1]

Housing and installation6

Maximum magnet gap — what it means The largest gap between sensor and magnet at installation at which the closed state is still detected reliably. It matters on doors and windows where the leaf and frame are not flush.	20 mm'Installation distance ≤ 20 mm': the gap with the door/window closed must be under 20 mm. Per SONOFF's comparison chart the magnet mounts horizontally only [1]
Mounting — what it means How and where it is installed: in a wall box, on a wall or ceiling, on a DIN rail, on a table or in a socket.	Adhesive tapeWith 3M adhesive tape; mounting height up to 2 m [1]
Dimensions — what it means The device’s size in millimetres as the maker states it. Check that it fits the wall box, niche or shelf.	Sensor: 50.5 × 32 × 21.9 mm; magnet: 27 × 12 × 12.4 mm [1]
Weight — what it means The device’s weight without packaging, per the maker.	33 gNet weight; whether the battery is included is not stated [1]
Installation environment	Indoors [1]
Certifications — what it means Standards and certifications the maker lists for this model (for example CE, RoHS, Zigbee 3.0, Matter).	CE, FCC, ISED, RoHS [1]

Control and features2

Tamper detection — what it means Reports when the sensor's housing is opened or the sensor is removed. Relevant when the sensor is used in security automations.	YesThe tamper button triggers when sensor and magnet are removed together. 'Removed' status works with ZBBridge-P/-U, NSPanel Pro, iHost, Home Assistant (ZHA, Z2M) and SmartThings; not with ZBBridge [2]
'Open/closed for a set time' trigger	Yes (eWeLink; needs ZBBridge-P/-U, NSPanel Pro or iHost, not the first-generation ZBBridge)Triggers 'Remain closed/opened for a duration'; hub table shows × for ZBBridge. No time range is stated for SNZB-04P. Product page: 'Customizable Door Left Open Alert' [3]

Measurement and detection2

Open trigger distance — what it means How many millimetres the magnet has to move away before the sensor reports "open". The smaller the value, the earlier a slight opening — such as airing the room — is noticed.	Not stated by the manufacturer
Light sensor — what it means Some door sensors also detect the light level. This lets you, for example, switch the light on when the door opens only after dark.	NoneNo light sensor is mentioned in the specifications or the feature list [3]

Power5

Batteries or battery — what it means Which cells it takes and how many. A built-in rechargeable battery is stated in the value.	1 × CR2477 [1]
Battery life — what it means Typical life on one set of batteries or one charge, per the maker. Frequent triggers, cold and a weak signal shorten it.	60 months'Over 5 years' — SONOFF lab estimate at 25 °C, connected to a SONOFF gateway, 50 triggers a day [2]
Supply voltage — what it means The supply voltage (and current, if stated) as the maker gives it. It must match your mains or adapter.	3 V ⎓ (CR2477) [1]
Power source — what it means Where the device gets its power: 230 V mains, an adapter, USB, batteries or a built-in battery.	Batteries [1]
Low-battery alert — what it means The sensor warns in the app in good time that its battery is running low, so it does not need manual checks.	Yes [1]

Operating conditions3

Operating temperature — what it means The air temperature range the device is rated for. The lower limit matters outdoors, on balconies and in unheated rooms.	−10…60 °C [1]
Operating humidity — what it means The rated relative humidity range, non-condensing.	5–95%Non-condensing [1]
Operating altitude	5000 mMaximum [1]

Model and version1

Colour — what it means The housing colour of this model. Other colours in the same series are separate products.	White [1]

Package contents1

Manufacturer warranty — what it means The warranty period the maker states. Confirm warranty terms in Moldova with the seller.	24 months'2-Year Hassle-Free Warranty' on the product page of the official SONOFF store (a store-wide term, not model-specific) [2]

Differences between manufacturer documents

The table shows the primary document’s value. Below is what other manufacturer documents state; we check the supplied version’s label before sale.

Wireless range: The manual gives 30 m indoors

Manufacturer documents

Clear purchase details

Delivery and stock

We deliver across Moldova. Availability, delivery timing and cost are confirmed with a manager before order fulfilment.

How is payment handled?

A website order is submitted for confirmation without charging your card. The payment method and final amount are agreed with a manager before payment.

Warranty and documents

The warranty is at least 12 months. The exact period and conditions for equipment and installation work are stated in the sales documents and the accepted proposal. Further support is agreed for each project.

Can I return the product?

Current conditions are published on the Return policy page. Email office@casasmart.md with your order number for the steps relevant to your situation. Statutory consumer rights continue to apply.

Delivery, payment and returns

In your home

First detect it. Then trigger the right routine.

A sensor reports measurements or events. What happens next depends on configuration and separate control devices.

See the complete solution

An entrance hall: the front door with a keypad lock and a door sensor, a panel on the wall — An example routineAn event at your door becomes a clear alert.

What to check before buying

We build a home security setup: cameras, video doorbells, door, motion and leak sensors with phone alerts. It does not replace a certified alarm system connected to a monitoring station. We account for false alarms, privacy, internet and power.
Power — Batteries: plan it for the mounting spot.

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