Tuya WiFi Smoke Detector Sensor 90dB Fire Alarm with Smartphone App – No DC

Safeguard your family, home, or rental property with round-the-clock fire monitoring using the Tuya WiFi Smart Smoke Detector Sensor (90dB Siren & Mobile App Alerts – No DC). Engineered with a responsive 360° photoelectric sensing chamber and 2.4GHz WiFi connectivity, this smart fire alarm detects slow-smoldering and fast-flaming fires early, triggering a piercing on-site siren while instantly dispatching push notifications directly to your smartphone.

Operating 100% battery-powered without hardwired DC power supplies, trailing wires, or mains AC adapters, it installs effortlessly onto any ceiling or high wall, providing reliable, independent fire detection with full integration into the Tuya Smart and Smart Life ecosystems.

Key Features & Specifications

• Product Type: Standalone Smart Photoelectric Smoke Detector & Fire Alarm.

• Smart App Integration (Tuya Smart / Smart Life):

  • Connects directly to 2.4GHz WiFi routers without requiring a separate smart hub or gateway.

  • Dispatches instant emergency push notifications to your paired iOS or Android smartphone the moment smoke is detected.

  • Multi-user sharing allows every family member or property manager to receive simultaneous emergency alerts.

  • Smart automation capability: trigger Tuya smart lights to turn on automatically to illuminate escape pathways during a fire alarm event.

• Powerful 90dB Acoustic Siren & Visual Strobe:

  • Emits an ear-piercing ≥90dB acoustic alarm at 3 meters to immediately wake sleeping occupants and alert neighbours.

  • Features a high-visibility flashing red LED strobe indicator for rapid visual verification.

• Precision Photoelectric Smoke Sensing:

  • Advanced optical labyrinth chamber detects visible smoke particles from slow-burning, smoldering materials (such as upholstery, bedding, and electrical wire insulation) before open flames erupt.

  • 360° omnidirectional air intake grille ensures rapid smoke ingress from any angle while keeping out airborne dust and tiny insects to minimize false alarms.

• 100% Battery-Operated & Cordless (No DC):

  • Powered by standard, user-replaceable batteries (e.g., standard 9V block battery or 2x 1.5V AAA alkaline cells, depending on production batch).

  • Zero hardwiring, zero electrician installation fees, and zero dependence on mains electricity during power blackouts.

  • Low-quiescent-current microchip provides 12 to 24 months of ultra-low-power standby.

  • Low Battery Reminder: Sends proactive app push notifications and emits an audible chirp weeks before battery depletion.

• Manual Test & One-Touch App Silence:

  • Large, tactile front Test / Mute button enables routine weekly manual alarm checks.

  • Supports convenient App Silence: temporarily hush nuisance cooking smoke alarms directly from your smartphone without needing to climb ladders.

Broad Universal Applications & Target Environments

• Bedrooms, Hallways & Living Spaces: Install along escape routes, near sleeping quarters, and in open living zones for standard household safety compliance.

• Kitchen Adjacent Areas & Dining Rooms: Place just outside kitchen entryways to catch accidental stove fires early while avoiding routine cooking steam interference.

• Rental Homes, Flats & Baches: 100% renter-friendly; mounts cleanly using two screws or high-strength double-sided adhesive pads without altering ceiling plaster or wiring.

• Home Offices, Garages & Workshops: Monitor detached sheds, tool storage, and computer workstations containing rechargeable lithium-ion battery banks or soldering equipment.

• Holiday Homes & Unoccupied Properties: Keep continuous remote watch over vacant investment properties with instant off-site mobile notifications.

Quick 4-Step Setup & Installation Guide

1. Install Battery: Twist open the mounting bracket from the base and insert fresh batteries matching the positive (+) and negative (-) terminals; the LED will blink once to confirm power-up.

2. Pair with Smartphone App: Open the Tuya Smart or Smart Life app, tap "+ Add Device", select "Sensor - Smoke Alarm (WiFi)", and follow the on-screen steps to connect to your 2.4GHz WiFi network.

3. Mount Baseplate: Fix the mounting bracket to the ceiling (at least 30 cm away from corners or light fittings) using the included screws and wall plugs.

4. Lock & Test: Align the smoke detector onto the bracket and twist clockwise until it clicks into place; press the front test button to confirm the 90dB siren sounds and the app receives an immediate test alert.

Technical Parameter

Power supply:DC9V alkaline battery (no include 6LR61)
Static current:<10uA
Alarm current: <100mA
Working temperature:0℃ ～ +50℃
Humidity:≦95%RH,no freezing
Alarm sound:>90dB
Low battery alert:≦7.0V±0.2V

【 Mute & Testing 】

Mute: in alarm status, press the 'TEST' button to mute the buzzer, only LED indicator flashes.

Testing: in normal status, long press 'TEST' button for 2s to trigger the sound & light alarm, alarm message is pushed to the mobile APP.

【 Smart Life APP / Tuya Smart APP】

Simple download APP "Smart Life/Tuya Smart" in App Store or Google , Home security in your hand all the time.

【 Installing method 】

a. Make a hole on the ceiling by using the percussion drill
b. Install the expansion tube on the ceiling
c. Fix the installation board by using the screw
d. Aiming the alarming device with the installing board and connect them, rotating clockwise till heard the "kaca" sound, means installing correctl

90DB Tuya Wifi Smoke Detector Sensor