SONOFF SenseGuard DW Gen2 Zigbee Door/Window Sensor | SNZB-04PR2
SONOFF SenseGuard DW Gen2 Zigbee Door/Window Sensor | SNZB-04PR2
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Description ▼
The SONOFF SenseGuard DW Gen2 (SNZB-04PR2) is a slim Zigbee door and window contact sensor with tamper detection, versatile magnet mounting, and up to three years of battery life on two standard AAA batteries. When a door or window opens—or if the sensor is removed—it can send app notifications and trigger automations such as sirens, camera recording, lights, or climate control. A Zigbee gateway is required.
KEY FEATURES
- Tamper detection sends instant app alerts and can trigger Smart Scenes (for example a gateway siren) if the sensor is forced off or damaged
- Use open/close or tamper status in automations for security and comfort—camera recording, sound and light alarms, lighting, or turning off climate control if a door or window stays open
- Slim, discreet design; 45.1 g including batteries, so it takes up minimal space on a door or window
- Horizontal or vertical magnet mounting, with a detachable magnet for tight, uneven, or unconventional frames
- Detection gap up to 30 mm when the magnet is installed horizontally, or 15 mm when installed vertically
- Powered by two standard AAA (LR03) batteries for easy replacement and up to 3 years of operation
- Zigbee 3.0; works with eWeLink, Matter Bridge via compatible SONOFF hubs, and Home Assistant (Zigbee2MQTT / ZHA)
SPECIFICATIONS
| Product name | SenseGuard DW Gen2 |
| Product series | SenseGuard Series |
| Model | SNZB-04PR2 |
| Product type | Zigbee door/window sensor |
| MCU | TLSR8656F512ET32 |
| Wireless | Zigbee 3.0 (IEEE 802.15.4) |
| Power | 3 V; 2 × LR03 AAA batteries (included) |
| Battery life | Up to 3 years |
| Detection gap | Up to 30 mm (horizontal mount) / 15 mm (vertical mount) |
| Color | White |
| Dimensions | Transmitter 90 × 26 × 13.5 mm; magnet 31 × 14 × 6.5 mm |
| Net weight | 45.1 g (including batteries) |
| Casing | PC |
| Environment | Indoor; −10 °C to 60 °C; 5–95% RH, non-condensing |
What's Included
- (1) SNZB-04PR2 transmitter
- (1) Magnet
- (2) AAA / LR03 batteries (installed; remove the insulation tab to power on)
- 3M adhesive
- User manual
NOTES
- A compatible Zigbee gateway/hub is required.
- Recommended SONOFF gateways include ZBBridge-P, ZBBridge-U, NSPanel Pro, and iHost. Other compatible models include ZBDongle-P, ZBDongle-E, Dongle-M, Dongle-PMG24, and Dongle-LMG21.
- Align the marks on the transmitter and magnet as closely as possible. When a door or window is closed, keep the gap under 30 mm for horizontal magnet mounting, or under 15 mm for vertical mounting.
- Indoor use only. The user manual specifies mounting at heights of 2 m or less.
- Home Assistant via ZHA currently requires a script. See SONOFF’s instructions at help.sonoff.tech/docs/SNZB-04PR2.
- Official product page: sonoff.tech. User manual: SNZB-04PR2 User Manual (PDF).
- SONOFF lists a 2-year hassle-free warranty for this product.
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SKU:C0187
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