SONOFF SNZB-04P Door and Window Sensor
Key features
Know when a door or window changes state. SONOFF SNZB-04P reports opening and closing to a compatible hub, so you can build useful entry, lighting or reminder routines. A separate magnet and compact battery-powered sensor fit around the opening, with tamper reporting available through supported integrations.
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Product Description
SONOFF SNZB-04P Door and Window Sensor
SONOFF SNZB-04P is a two-part magnetic contact sensor. The transmitter and magnet are installed on opposite sides of an opening so that separation indicates an open door or window. Through a compatible Zigbee gateway, those events can trigger configured scenes, alerts or a record of opening and closing activity.
What it does
- Open/closed status can be used for entry lighting, door-left-open reminders or other routines supported by the controller.
- Tamper reporting adds an event when the sensor’s enclosure is disturbed, where that event is supported by the hub integration.
- Low-battery reporting helps plan maintenance instead of discovering a flat battery only when an automation stops responding.
- Adhesive installation avoids running a cable to the frame; correct alignment and a small closed-position gap are essential.
Technical specifications
| Model | SNZB-04P |
|---|---|
| Wireless | Zigbee 3.0 |
| Battery | CR2477, 3 V |
| Transmitter dimensions | 50.5 × 32 × 21.9 mm |
| Magnet dimensions | 27 × 12 × 12.4 mm |
| Closed installation gap | Less than 20 mm; align the marked sides |
| Working temperature | −10°C to 60°C |
| Working humidity | 5–95% RH, non-condensing |
Where it fits
A front-door routine can turn on the entrance light at night, while a cupboard door can operate an internal light through a separate connected switch. For an air-conditioned room, a delayed window-open reminder may be preferable to an immediate shutdown. Define the desired delay and exception rules in the automation platform, then test repeated opening and closing from the fully latched position.
Setup and compatibility
Pair with a supported Zigbee gateway before permanently attaching the parts. SONOFF lists its bridges and selected SmartThings/Aeotec and Echo hubs, but history, alerts and tamper-event exposure depend on the integration. Position the sensor and magnet so the marks line up when closed; test the actual frame, not just the parts held together in your hand.
Important details
This reports magnetic separation, not whether a latch is locked or glass has broken. It contains no built-in siren: audible alarms require a compatible separate device or hub. Use indoors within the stated environmental limits. Keep the battery compartment secure. The signal should be checked at the final position before relying on an entry notification.
Specifications
- Brand
- SONOFF
- Category
- Door/Window Sensors
- SKU
- ENQ-SONOFF-SNZB-04P-DOOR-AND-WINDOW-SENSOR
- Model
- SNZB-04P
- Protocol
- Zigbee
- Ordering
- Enquiry only
- Availability
- Out of stock
- Warranty
- Manufacturer warranty
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