Smart Wireless Door Alarm Sensor With 433MHz Long Range, 10m Detection, APP Alerts & 100dB Siren

When Every Millimeter Matters​​ In a world where 2mm of door movement could mean lost safety or stolen memories, our 360° detection sensor delivers military-grade precision for civilian peace of mind. ​​Engineered for Relentless Protection​​ ✓ ​​10m Laser-Calibrated Range​​ – Detects approaching threats before they reach your doorstep (3x industry standard) ✓ ​​433MHz Battlefield Radio Tech​​ – Penetrates concrete walls that block common 2.4GHz signals ✓ ​​Ninja-Level Stealth​​ – 118g featherweight design disappears on door frames ✓ ​​Arctic-to-Desert Ready​​ - Operates flawlessly from -10°C frost to 80°C heatwaves ✓ ​​APP Command Center​​ – Customize siren duration/sensitivity in Tuya/ARIZA app ​​Smart Scenarios That Think Ahead​​ ▸ For Barcelona Apartments: Hears window tampering through 18" stone walls ▸ For Berlin Bookshops: Triggers lights+camera when after-hours glass breaks ▸ For Miami Vacation Homes: Sends owner videos when renters exceed guest limits ​​Why Settle for Basic Alarms?​​ While others use toy-grade 2.4GHz chips, our F-02 harnesses the same 433MHz frequency trusted by emergency responders. The 2mm action distance detects door cracks even burglars miss. ​​Your Turn to Take Control​​ Join 47,000+ European homes who upgraded to professional-grade security at DIY prices. Select "F-02 English Voice Version" for instant Alexa integration.