AT-S224 Tuya WiFi Photoelectric Smoke Alarm | 9V 5 years Smart Smoke Detector

Product Description

The ANWETECH AT-S224 is a smart photoelectric smoke alarm designed for household and similar residential applications. It uses photoelectric smoke sensing technology to detect smoke at the early stage of a fire and provide sound and light warning, giving users more time to control the fire or evacuate safely.

Unlike ordinary standalone smoke alarms, the AT-S224 supports connection to the Tuya platform, allowing the detector to work as a smart home smoke alarm solution. When properly installed and connected, it can provide enhanced monitoring and convenient smart alarm management for residential projects.

Powered by a 9V battery, the detector is easy to install on the ceiling and suitable for bedrooms, corridors, living rooms and similar indoor environments. It also includes hush mode, enabling temporary alarm silence when nuisance alarms occur, while still maintaining basic protection.

Key Features

• Tuya WiFi photoelectric smoke alarm
• Smart smoke detector for residential applications
• Powered by 9V battery
• Photoelectric smoke sensing technology
• Audible and visual alarm
• Tuya platform connection support
• Red and green LED indication
• Hush mode / silence function
• Weekly test function
• Suitable for household and residential use
• Ceiling-mounted installation
• EN14604:2005/AC:2008 compliant

Technical Specifications

Model No.: AT-S224
Standard: EN14604:2005/AC:2008
Voltage: DC 9V
Standby current: ≤10 uA
Alarm current: ≤150 mA
Sensor type: Photoelectric
Operating temperature: 0°C to +40°C
Ambient humidity: ≤95% RH
Hush time: About 10 minutes
Alarm indication: Red LED & buzzer
Sound pressure: >85 dB (around 3 m)
Net weight: 88 g (battery not included)
Product size: Ø100 × 37 mm
Installation way: Ceiling mounting

Function Description

Power-on status:
After inserting the 9V battery, the red and green LEDs flash alternately and the buzzer sounds once.

Standby mode:

• When connected to the Tuya platform, the green LED flashes once every 53 seconds.
• If not connected to the Tuya platform, the green LED flashes once every 8 seconds.
• In standby mode, the detector does not emit an alarm sound.

Test function:
Press and hold the test button. After a few seconds, the detector enters test alarm status. The sounder emits three consecutive sounds, and after releasing the button, the detector stops alarming within seconds.

Hush mode:
When the detector is in alarm status, pressing the test button will activate hush mode. In hush mode, the red LED flashes once every 8 seconds. The hush period lasts about 10 minutes, after which the detector returns to normal standby mode.

Low battery / fault indication:
When the battery voltage is too low, the detector sends low-voltage fault signals. The alarm sounds once about every 53 seconds, and the yellow LED flashes once.
When the smoke sensor is short-circuited or disconnected, the detector enters sensor fault mode. The alarm beeps twice about every 53 seconds, and the yellow LED flashes twice.

Recommended Installation Area

• Household residences
• Apartments
• Bedrooms
• Living rooms
• Corridors
• Villas
• General residential indoor applications

Installation Method

1. Choose a suitable installation position on the ceiling.
2. Drill two mounting holes with a diameter of 5 mm.
3. The spacing between the two holes should be 75–80 mm.
4. Insert the supplied expansion rubber plugs into the holes.
5. Fix the mounting bracket to the ceiling with the enclosed screws.
6. Install the 9V battery into the smoke alarm.
7. Attach the detector to the mounting bracket.
8. If the detector is mounted on a wooden ceiling, steps involving rubber plugs may be omitted.

Installation Notes

• Install the smoke alarm at the top of the ceiling because smoke rises upward.
• For flat ceilings, install near the center of the ceiling.
• For inclined ceilings, avoid dead-air areas.
• Keep at least 0.5 m clearance around the detector.
• Do not install too close to gas cookers.
• Do not install in kitchens, where cooking fumes may cause nuisance alarms.
• Do not install in bathrooms or high-humidity areas.
• In large rooms, the distance between two detectors should not exceed 10 m.
• Avoid garages where car exhaust may trigger nuisance alarms.
• Avoid dusty environments.

Maintenance

• Press the test button every week to confirm correct operation.
• Clean the detector surface with a soft brush every month.
• If the smoke sensor is short-circuited or disconnected, the detector will enter fault condition automatically.
• When battery voltage is too low, replace the battery promptly.
• For Tuya connection instructions, refer to the Tuya Platform Networking Guide.

Emergency Handling

If the alarm is caused by non-fire smoke such as cooking fumes, clear the smoke source in time to silence the alarm.
If a false alarm occurs frequently, check the installation position and surrounding environment.
If there is a real fire, take immediate fire safety action and evacuate when necessary.

Troubleshooting

No alarm during test:

• Battery not installed correctly or no power
• Detector may be defective

LED flashes every 53 seconds and alarm emits one beep:

• Low battery capacity
• Replace the battery with a new one

LED flashes twice every 53 seconds and alarm emits two beeps:

• Smoke sensor fault
• Return the detector for service or replacement

Applications

• Smart residential smoke alarm projects
• Apartments and homes
• Villas and bedrooms
• Corridors and living spaces
• Residential smart home fire detection
• Indoor household smoke alarm systems