Sanjie Wireless Door Window Alarm Sensors

Ultra-Sensitive Detection
– High-precision sensors instantly trigger loud 110dB alarms when doors/windows open unexpectedly, deterring intruders effectively.
3 Customizable Modes
– Switch between
Instant Alarm
,
Delay Mode
(entry/exit grace period), and
Silent Alert
(stealth monitoring via app/vibration).
Tool-Free Installation
– Strong adhesive backing and magnetic alignment design for effortless setup on any surface (wood, glass, metal) in seconds.
Reliable Wireless Tech
– 433MHz RF signal penetrates walls, 328ft range with stable connectivity. CR123A battery lasts 2+ years, with low-battery alerts.
Durable & Weatherproof
– ABS+PC housing withstands extreme temps (-10°C~50°C) and humidity, ideal for homes, offices, warehouses, and pool gates.
Compact & Discreet
– Slim 2.3cm design blends seamlessly with door/window frames without obstructing movement.
Multi-Pack Savings
– Bulk discounts available for wholesalers securing entire properties (hotels, retail chains, apartment complexes).