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Sonoff SNZB-01P
Expert4House – Smart Home Automation
Sonoff SenseGuard SNZB-09P Smart Zigbee Indoor Siren 105 dB
€24.90
Tax included
No review at the moment
- Alarm up to 105 dB: the siren reaches 105 dB and covers an entire floor of your home, deterring intruders and immediately alerting anyone inside.
- Four volume levels: use the app to choose approximately 75, 82, 93 or 105 dB measured at 1 metre, or silent mode: low for reminders, high for security alarms.
- 10 built-in tones: six sirens and four more discreet tones let you assign a different tone to each sensor so you know what has happened. Custom sounds are not supported.
- Red light ring: the red ring on the front flashes with the alarm and is visible even in the dark. Use sound only, light only or both together.
- Adjustable duration: in the eWeLink app, set the alarm duration, volume, tone and whether to enable light and sound, with different settings available for each scene.
- Dual power supply: powered via a 5 V 1 A USB-C port, with a 600 mAh lithium backup battery that recharges when USB power is connected.
- Online even during power outages: if the power goes out, it automatically switches to battery power and stays connected to the hub: in silent mode, it stays online for over 300 days.
- Tamper alert: the app displays the siren's tamper status and alerts you if anyone tampers with it, while also showing the battery level.
- Scenes with Sonoff sensors: sounds when a Sonoff door sensor, motion sensor or water leak sensor is triggered, or when you press an emergency button.
- Zigbee 3.0, hub required: connects to a Sonoff Zigbee hub such as Bridge Pro, Bridge Ultra, NSPanel Pro or iHost; the signal reaches up to 100 m in open areas.
- Alexa, Google Home and Matter: with a Sonoff Zigbee hub, the siren integrates with Amazon Alexa and Google Home, and with a compatible Sonoff hub, it also integrates with Matter ecosystems.
- Home Assistant with a dongle: works with a Sonoff Zigbee dongle in Zigbee2MQTT 2.12.1 or later; in ZHA, some features require the script specified by Sonoff.
- Wall mounting with screws or adhesive: the twist-lock base attaches with screws and wall plugs or 3M double-sided adhesive tape, all included. The package includes a 2 m cable, but no power adapter.
- Compact, for indoor use: measures 81 × 81 × 35 mm and weighs 106 g, with a white ABS housing and red ring; designed for indoor use between 0 and 45 °C.
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Sonoff SNZB-09P: 105dB Zigbee Indoor Siren with Red Light and Battery Backup
The Sonoff SNZB-09P Zigbee siren from the SenseGuard series sounds an alarm up to 105 dB , loud enough to cover an entire floor of your home, and turns on a red light ring that's visible even in the dark. Choose whether to use just the sound, just the light, or both, from 10 built-in tones and four volume levels. It's powered by a 5V USB-C port and has a 600 mAh backup battery : in the event of a power outage, it stays connected and ready to sound. With Sonoff sensors, it becomes the voice of your system: it sounds when a door opens, when a sensor detects a water leak, or when someone presses an emergency button. To work, you need a Sonoff Zigbee hub or a Zigbee dongle with Home Assistant.
105 dB alarm that covers an entire floor of the house
When the alarm goes off, the SNZB-09P reaches a volume of 105 dB , allowing the sound to travel through the rooms and cover an entire floor. Such a high level has two effects: anyone trying to break in realizes they've been discovered, and anyone else in the house notices immediately, even if they're sleeping. The volume doesn't always have to be set to maximum. In the app, you can choose between four levels —approximately 75, 82, 93, and 105 dB measured at 1 meter—or silent mode. Low volume is good for a kitchen reminder, while high volume is good for a burglar alarm. Place it in a central location, like the hallway or living room, so the sound reaches all rooms more evenly.
Volume, light, duration and tone are set from the eWeLink app
All the siren settings are in its own tab in the eWeLink app. Turn the alarm sound and light on or off separately, adjust the volume , set the alarm duration , and choose the tone . From the same screen, you can sound the siren with the Alarm button and view the event history. The app also displays the tamper-proof status: if someone tampers with the siren, you'll receive an alert. Compared to a standard siren, as the Sonoff comparison table shows, you have more volume levels, including silent mode, and a brighter light. The same settings are found in the scenes, where you decide how the siren should react to each sensor.
10 alarm tones to match each Sonoff sensor
The siren has 10 built-in tones : six sirens (Classic, Steady, Rising, Warning, Rapid, and Emergency) and four more discreet tones (Chirp, Hi-Lo, Intermittent, and Pulse). By pairing a different tone with each sensor, you can understand what happened without looking at your phone. For example, the Sonoff SNZB-03PR2 motion sensor can play the Chirp tone when someone passes by in the living room, the SNZB-05P water leak sensor can play the Emergency siren, and the Sonoff CAM-B1P camera can play the Warning siren. The tones are the built-in ones only: the siren does not play custom sounds or melodies, so it is not a replacement for a doorbell with a ringtone of your choice.
Red ring light to see the alarm even in the dark
On the front, there's a red light ring that flashes along with the alarm. It's useful when the sound alone isn't enough: in a dark room, with the TV on, or for someone with hearing loss, the red light immediately lets you know something's wrong. You can also use just the light , without sound, for a silent alert at night, or just the sound. In the Sonoff image, the outdoor camera focuses on a person at the door, and the siren inside the house lights up red and sounds. For a more complete system, you can find indoor and outdoor sirens in our catalog, to complement the SNZB-09P and the door and window sensors.
Dual power supply: USB-C 5V and 600mAh backup battery
The siren is powered by a 5V 1A USB-C port with the included 2-meter cable: the USB power supply is not included; a standard 5V power supply will do. Inside, there's a 600mAh lithium battery that recharges itself when the USB port is connected. If the power goes out, the siren seamlessly switches to battery power and remains connected to the hub: in silent mode, it stays online for over 300 days . The ON/OFF button on the bottom only works when the siren is running on battery power, while when the USB port is connected, it remains permanently on. This way, a power outage won't turn off the alarm just when you need it, for example, if someone turns off the power before entering.
Burglar alarm with door sensor: the siren sounds when it opens
With a door and window sensor, the siren becomes a small burglar alarm. In the Sonoff example, the Sonoff SNZB-04PR1 door sensor detects the opening of the front door, and the SNZB-09P triggers a loud alarm: anyone entering is deterred, and you immediately know something is wrong. The same applies with the SenseGuard SNZB-04PR2 sensor or a motion sensor. The scene is created in the eWeLink app with the Zigbee hub and activated only when needed, such as when you leave the house or at night, choosing the tone, volume, and duration of the alarm.
Water leak and fall alarm with button and sensor
The siren also helps outside of the burglar alarm. If an elderly person lives in the home, the Sonoff SNZB-01P button becomes an emergency button: press it after a fall and the siren alerts those in other rooms. In the bathroom, kitchen, or laundry room, the SNZB-05P water leak sensor detects water on the floor and the siren sounds a loud warning, audible even in the bedroom at night. This way, you can intervene before the water reaches under the furniture or downstairs, and you can choose a different tone for each event.
Reminders for laundry, mail, visitors, and open doors
With its low volume and discreet tone, the siren becomes a reminder for your home. The Sonoff MINI-ZB1GSP module measures your washing machine's power consumption and, when power drops at the end of the cycle, the siren alerts you. The SNZB-03PR2 sensor notifies you of the arrival of mail, the Sonoff AirGuard CO2 monitor SAWF-08P alerts you when air levels exceed limits, the SNZB-01P button acts as a doorbell for those arriving, and the SNZB-04PR2 sensor reminds you if the refrigerator or door has been left open for more than a minute. Each reminder has its own tone.
Home Assistant and Zigbee2MQTT with Sonoff Zigbee dongles
The siren is a Zigbee 3.0 device: in addition to Sonoff hubs, it works with Home Assistant via a Zigbee dongle, such as the Sonoff Dongle Plus MG24 . In Zigbee2MQTT, version 2.12.1 or later is required: with earlier versions the siren may not connect or not display all the functions. Native support in ZHA is not yet complete: some functions are not available immediately and Sonoff provides a configuration script in its Help Center, which also applies to SmartThings. From Home Assistant, you can control the siren, light, tone, volume and duration, and read the battery, power type and tamper information.
Compatible with Bridge Pro, Bridge Ultra, NSPanel Pro and iHost
To use the siren with the eWeLink app, you need a Sonoff Zigbee hub : the Zigbee Bridge Pro , the Zigbee Bridge Ultra , the NSPanel Pro , or the iHost . With eWeLink , you have all the functions, including OTA firmware updates. With a Sonoff dongle, namely Dongle Plus MG24, Dongle Max, ZBDongle-E , ZBDongle-P, or Dongle Lite MG21, you can use it in ZHA or Zigbee2MQTT; with the Aeotec SmartThings hub (V3) in SmartThings, with the limitations indicated in the table. The Zigbee signal reaches up to 100 meters in open fields; indoors, walls and attics reduce the range. With the Sonoff hub, the siren can also be used with Amazon Alexa and Google Home , and with a Sonoff hub equipped with a Matter Bridge, it enters the Matter ecosystems, such as Apple Home.
Wall mounting with the screws and plugs provided
Mounting without holes with the two 3M crescent-shaped double-sided adhesives
Four-step setup with eWeLink app and hub
Before you begin, add your Sonoff Zigbee hub to the eWeLink app. Then tap Add Device and scan the siren's QR code . Choose the Zigbee hub you want to connect it to. Wait for the hub to find the device. The siren will then appear in the list and you can set it up. To mount it, rotate the base counterclockwise to detach it, secure it to the wall with the screws and wall plugs or the two included 3M double-sided adhesive strips , with the UP arrow facing upwards. Then place the siren on the base and rotate it clockwise until it locks into place. The 2-meter cable attaches to the wall with the three included clips.
SNZB-09P Siren Specifications and Package Contents
Frequently Asked Questions
Do I need a hub to use the siren?
Yes. It's a Zigbee 3.0 device: with the eWeLink app, you need a Sonoff Zigbee hub like Bridge Pro, Bridge Ultra, NSPanel Pro, or iHost; with Home Assistant, you need a Zigbee dongle.
Does it work with Alexa, Google Home, and Matter?
Yes, via the Sonoff Zigbee hub. With the eWeLink app, you can connect the siren to Amazon Alexa and Google Home; with a Sonoff hub equipped with a Matter Bridge, you can also use it in Matter ecosystems, such as Apple Home.
How loud does it sound?
Up to 105 dB. There are four volume levels: approximately 75, 82, 93, and 105 dB measured at 1 meter, plus silent mode.
Can I use just the light or just the sound?
Yes. The sound and light turn on and off separately: you can use just the sound, just the red ring, or both together.
Can I upload custom sounds or melodies?
No. Choose from 10 built-in tones: six sirens and four more discreet tones, to match different sensors.
What happens if the power goes out?
The siren automatically switches to the 600 mAh lithium battery and remains connected to the hub. In silent mode, it stays online for over 300 days; the battery recharges when USB power returns.
What is the ON/OFF button for?
Turns the siren on and off when running on battery power. When USB power is connected, the button has no effect and the siren remains on.
Is there a power supply in the package?
No. You'll find the siren, a 2-meter power cable, three cable clips, two screws with wall plugs, two crescent-shaped adhesive pads, and the instructions. You'll need a 5V 1A USB power supply.
Does it work with Home Assistant?
Yes, with a Zigbee dongle. Zigbee2MQTT requires version 2.12.1 or later; in ZHA, some functions require the configuration script provided by Sonoff in its Help Center.
How does it attach to the wall?
With the included screws and plugs or with the 3M double-sided adhesive tape, also included. The base is detached by rotating it and mounted with the UP arrow facing upwards.
Can it be used outside?
No. It's an indoor siren, suitable for temperatures from 0 to 45°C and humidity up to 90% non-condensing. For outdoor use, you can find outdoor sirens in our catalog.
Sonoff-SNZB-09P
Data sheet
- Power supply
- 5V-1A Type-C or 600mAh Battery
- Colors
- White
- Material
- ABS
- Working temperature
- 0℃ ~ 45 ℃
- Working humidity
- 0% - 90% non-condensing
- Voice Control
- Amazon Alexa, Google Home and Siri
- Mobile application
- eWeLink
- Dimensions
- 81x81x35 mm
- Item weight
- 106 g
- Communication Protocol
- Zigbee 3.0
- Reload
- 5V/1A/Type-c
- mcu
- TLSR8656
- Zigbee protocol
- IEEE 802.15.4 (Zigbee 3.0)
- Maximum Communication Distance
- Up to 100 meters
- Acoustic alarm
- 105dB
- Ideal for Automation
- Alarm System
- Works with
- Amazon Alexa
Apple Home (HomeKit)
Google Home
Home Assistant
Matter
SmartThings
eWeLink (Sonoff) - Hub required
- Sonoff Zigbee hub (ZBBridge / iHost / NSPanel Pro)
- Ideal for
- Alarm & video surveillance
Scenes & automations - Home Assistant integration
- Cloud integration
Zigbee via dongle (ZHA / Zigbee2MQTT)
Specific References
- UPC
- 697903360082
- EAN13
- 6979033600829
- MPN
- Sonoff SNZB-09P
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- Alarm up to 105 dB: the siren reaches 105 dB and covers an entire floor of your home, deterring intruders and immediately alerting anyone inside.
- Four volume levels: use the app to choose approximately 75, 82, 93 or 105 dB measured at 1 metre, or silent mode: low for reminders, high for security alarms.
- 10 built-in tones: six sirens and four more discreet tones let you assign a different tone to each sensor so you know what has happened. Custom sounds are not supported.
- Red light ring: the red ring on the front flashes with the alarm and is visible even in the dark. Use sound only, light only or both together.
- Adjustable duration: in the eWeLink app, set the alarm duration, volume, tone and whether to enable light and sound, with different settings available for each scene.
- Dual power supply: powered via a 5 V 1 A USB-C port, with a 600 mAh lithium backup battery that recharges when USB power is connected.
- Online even during power outages: if the power goes out, it automatically switches to battery power and stays connected to the hub: in silent mode, it stays online for over 300 days.
- Tamper alert: the app displays the siren's tamper status and alerts you if anyone tampers with it, while also showing the battery level.
- Scenes with Sonoff sensors: sounds when a Sonoff door sensor, motion sensor or water leak sensor is triggered, or when you press an emergency button.
- Zigbee 3.0, hub required: connects to a Sonoff Zigbee hub such as Bridge Pro, Bridge Ultra, NSPanel Pro or iHost; the signal reaches up to 100 m in open areas.
- Alexa, Google Home and Matter: with a Sonoff Zigbee hub, the siren integrates with Amazon Alexa and Google Home, and with a compatible Sonoff hub, it also integrates with Matter ecosystems.
- Home Assistant with a dongle: works with a Sonoff Zigbee dongle in Zigbee2MQTT 2.12.1 or later; in ZHA, some features require the script specified by Sonoff.
- Wall mounting with screws or adhesive: the twist-lock base attaches with screws and wall plugs or 3M double-sided adhesive tape, all included. The package includes a 2 m cable, but no power adapter.
- Compact, for indoor use: measures 81 × 81 × 35 mm and weighs 106 g, with a white ABS housing and red ring; designed for indoor use between 0 and 45 °C.
Sonoff SenseGuard SNZB-09P Smart Zigbee Indoor Siren 105 dB
€24.90
Tax included
No review at the moment