Sonoff · SNZB-04PR2

Sonoff SenseGuard DW Gen2 SNZB-04PR2 door/window sensor, Zigbee

Name: Sonoff SenseGuard DW Gen2 SNZB-04PR2 door/window sensor, Zigbee
Brand: Sonoff
SKU: 6979033600140
Price: 349 MDL
Availability: InStock

349 MDLIn stock

Door & window sensors

Zigbee

Manufacturer images

349 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: 2 × AAA (LR03)

Zigbee door/window sensor on two AAA batteries (up to 3 years, included) with tamper detection. The magnet mounts horizontally (gap under 30 mm) or vertically (under 15 mm) and can come out of its housing; a Zigbee gateway is required.

25 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

Document model: SNZB-04PR2

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.	ZigbeeManual: Zigbee (IEEE 802.15.4), 2405–2480 MHz; the official spec graphic says Zigbee 3.0 [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 required'A Zigbee gateway is needed.' Recommended SONOFF gateways: ZBBridge-P, ZBBridge-U, NSPanel Pro, iHost; the first-generation ZBBridge reports only open/close and battery [2]
Wireless range — what it means The stated radio range, usually in open space. Walls and floors cut it noticeably.	100 mOpen area [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 SONOFF Zigbee dongle; ZHA currently needs the maker's script [3]
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.	Not stated by the manufacturer
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.	TLSR8656F512ET32 [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, iHost or eWeLink CUBE with a SONOFF dongle [2]
Radio frequencies and transmit power	2405–2480 MHz, ≤10 dBm [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.	30 mmWith the magnet mounted horizontally the gap must be under 30 mm; mounted vertically, under 15 mm [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; the magnet can be mounted horizontally or vertically and taken out of its housing where space is tight. 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: 90 × 26 × 13.5 mm; magnet: 31 × 14 × 6.5 mm [1]
Weight — what it means The device’s weight without packaging, per the maker.	45.1 gWith batteries [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, 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.	YesA built-in tamper switch on the back detects removal; status and alert appear in the app. Tamper status is not passed through Alexa or ZBBridge; SmartThings needs a script [3]
'Open/closed for a set time' trigger	1 min to 23 h 59 min (eWeLink) [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]

Power4

Batteries or battery — what it means Which cells it takes and how many. A built-in rechargeable battery is stated in the value.	2 × AAA (LR03)Batteries are included [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.	36 months'Up to 3 years'; test conditions are not stated [3]
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 ⎓ (2 × 1.5 V AAA) [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]

Operating conditions2

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]

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]

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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