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Tuya Smart WiFi and GSM 4G Alarm System with Touch Screen Display
€119.90
Expert4House – Smart Home Automation
Tuya RF433 Battery-Operated Photoelectric Smoke Detector with 85dB Siren
€9.89
Tax included
No review at the moment
- Infrared photoelectric sensor: detects smoke in the early stage of a fire thanks to a high-sensitivity photoelectric sensor designed for reliable response.
- Compatible with RF433 alarm systems: communicates on the 433 MHz frequency and is compatible with our smart control panels and many RF panels on the market.
- Powerful audible alarm over 85 dB: when smoke is detected, it triggers a clearly perceptible audible and visual alarm, with a sound pressure level over 85 dB at 3 meters.
- Powered by 2 x AA batteries: operates at DC 3V with two 1.5V AA batteries, ideal for easy, wire-free installation.
- Built-in Test function: the dedicated button allows you to periodically verify the correct operation of the detector quickly and easily.
- Temporary Mute function: lets you temporarily silence the alarm when needed, while still maintaining attention to environmental safety.
- Low-battery alert: when the battery is nearly depleted, the device emits a periodic beep with red LED flashing to indicate replacement is needed.
- Red status LED indicator: the LED flashes in standby and during an alarm, making it easy to recognize the detector’s operating status.
- Ceiling installation: designed for ceiling mounting with 60 mm hole spacing, suitable for regular spaces up to about 20 m² with a maximum height of 6 m.
- Ideal for residential and professional environments: suitable for homes, shops, factories, and warehouses as a practical fire prevention solution.
- Compact and lightweight: dimensions approx. 90 x 40 mm and weight approx. 120 g with batteries, for a discreet, space-saving installation.
Secure payments: cards, PayPal, bank transfer, and installments
Delivery within 48 hours: Free shipping on orders over €150 across Europe
Easy 14-day returns: follow the steps to get your refund
Photoelectric smoke sensor for constant security
This photoelectric smoke sensor is designed to offer practical, reliable, and immediate protection in environments where safety matters most. Compact, easy to install, and battery-powered, it helps promptly detect the presence of smoke and activates an audible alarm above 85dB , thus quickly reporting a potentially dangerous situation. It is the ideal solution for those who want to increase the protection of their home, office, shop, warehouse, or other indoor environments with a simple-to-use yet effective fire prevention device. Thanks to photoelectric technology, a Test/Mute button , a low battery warning , and compatibility with RF433 alarm systems, this detector combines safety, practicality, and integration in a single product designed for everyday protection. The manual confirms its photoelectric technology, power supply with 2 AA batteries , a siren >85dB at 3 meters , and its use in environments such as homes, shops, factories, and warehouses.
360° smoke detection for reliable protection
Thanks to its 360° detection system and double honeycomb air intake structure, the sensor is designed to intercept smoke more quickly and effectively from every direction. This configuration improves the detector's response speed, increasing the timely alarm in the event of a fire. In the presence of smoke, the device also activates a siren exceeding 85dB , providing a loud and immediately audible warning to increase safety in your home, office, or other indoor environments.
Compatible with smart control panels and alarm systems
This smoke detector is designed to integrate with our smart alarm panels and RF433 alarm systems , offering a more comprehensive solution for home or business security. Thanks to RF433 wireless communication, it can send stable signals and help make the alarm system more responsive and organized. This feature is ideal for those who want an easy-to-integrate sensor that can work with the control panel for more convenient, reliable, and connected fire protection management.
Replaceable AA batteries with low battery warning
Protect every important environment
For more effective protection, the smoke detector should be installed in strategic points of the home, such as bedrooms , living rooms , hallways , kitchens , garages , and other passageways or utility areas. Proper positioning helps intercept smoke more quickly and improves the home's overall security, creating a wider, more even coverage. The manual recommends ceiling mounting and a coverage of approximately 20 m² in standard rooms up to 6 m high, useful elements for planning a more effective installation.
Loud and immediate audible alarm
When smoke is detected, the sensor activates a siren louder than 85 dB , designed to quickly signal danger and immediately attract the attention of those present. The high acoustic intensity makes the alarm clearly audible in domestic environments and helps you respond more quickly in an emergency. This is a fundamental function for increasing the security of your home, shop, or other indoor spaces, with a loud, clear, and immediate audible warning.
Fireproof ABS body for added strength
Made of flame-retardant ABS material , the detector is designed to offer a more resistant, safe structure suitable for everyday use in domestic and professional environments. The casing ensures good resistance to heat and corrosion , helping to keep the device more reliable over time and better protecting its internal components. An important feature for those looking for a compact, durable smoke detector built with materials designed to increase safety and continuity of operation.
Frequently Asked Questions
Yes. In normal standby, the red LED flashes approximately every 60 seconds. This is the expected behavior when the detector is properly powered and ready to operate.
This usually indicates low battery. When the battery is low, the red LED flashes and the device beeps approximately every 55 seconds. In this case, the batteries need to be replaced.
The most common causes are dust, vapors, non-fire fumes, corrosive air, or installation in unsuitable environments. The manual advises against use in spaces with fog, steam, fumes, coarse dust, humidity over 95%, or ventilation greater than 5 m/s.
It is designed for ceiling installation. In regular spaces, it covers approximately 20 m² with a maximum height of 6 meters. For proper operation, it must be mounted in a suitable position, following the fixing instructions with a 60 mm hole spacing.
Yes, the manual indicates a sound pressure level greater than 85 dB at 3 meters in front of you. This level is designed to clearly and immediately warn of a potentially dangerous situation.
Standard deliveries to Italy generally take 24-48 hours from the time the package leaves the warehouse.
Orders confirmed by 3:30 PM on weekdays (Monday-Friday) are processed and shipped the same day.
Orders placed after 3:30 PM or on weekends or public holidays will be processed on the next working day.
Yes, we ship internationally to the European Union and several non-EU countries via couriers such as UPS Standard and DHL Express.
For the EU, with UPS Standard the average times are 2-3 working days .
With DHL Express, usually 1-2 business days .
Tuya-S11-RF
Data sheet
- Power supply
- LR6 battery
- Working temperature
- from -10°C to +50°C
- Working humidity
- 0-95% Non-Condensing
- Voice Control
- None
- Dimensions
- 90x28x25 mm
- Communication Protocol
- RF 433MHz
- Installation
- Ceiling
- Wireless transmission range
- 100 meters (open area)
- Acoustic alarm
- 85db
- Detection Type
- Smoke
- Ideal for Automation
- Alarm System
- Works with
- Tuya / Smart Life
- Hub required
- Tuya alarm panel (RF 433)
- Ideal for
- Alarm & video surveillance
Sensors & detection - Home Assistant integration
- Not integrable
Specific References
- UPC
- 871190209030
- EAN13
- 8711902090304
- MPN
- Tuya S11-RF
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- Infrared photoelectric sensor: detects smoke in the early stage of a fire thanks to a high-sensitivity photoelectric sensor designed for reliable response.
- Compatible with RF433 alarm systems: communicates on the 433 MHz frequency and is compatible with our smart control panels and many RF panels on the market.
- Powerful audible alarm over 85 dB: when smoke is detected, it triggers a clearly perceptible audible and visual alarm, with a sound pressure level over 85 dB at 3 meters.
- Powered by 2 x AA batteries: operates at DC 3V with two 1.5V AA batteries, ideal for easy, wire-free installation.
- Built-in Test function: the dedicated button allows you to periodically verify the correct operation of the detector quickly and easily.
- Temporary Mute function: lets you temporarily silence the alarm when needed, while still maintaining attention to environmental safety.
- Low-battery alert: when the battery is nearly depleted, the device emits a periodic beep with red LED flashing to indicate replacement is needed.
- Red status LED indicator: the LED flashes in standby and during an alarm, making it easy to recognize the detector’s operating status.
- Ceiling installation: designed for ceiling mounting with 60 mm hole spacing, suitable for regular spaces up to about 20 m² with a maximum height of 6 m.
- Ideal for residential and professional environments: suitable for homes, shops, factories, and warehouses as a practical fire prevention solution.
- Compact and lightweight: dimensions approx. 90 x 40 mm and weight approx. 120 g with batteries, for a discreet, space-saving installation.
Tuya RF433 Battery-Operated Photoelectric Smoke Detector with 85dB Siren
€9.89
Tax included
No review at the moment