Meet the J35 Tuya Smart Sensor Alarm — a simple but powerful security add-on for doors and windows. Once installed, it monitors your entry points and alerts you immediately when a door or window is opened. If someone tries to pry your window or open a door unexpectedly, the J35 responds with a bright flashing red warning light and a very loud siren (up to 100dB) to scare off intruders and alert everyone nearby.
Even when you’re not at home, the device keeps you in control by sending instant notifications to your phone through the Tuya Smart/Smart Life app. You can also set timed arming and disarming schedules so your sensor automatically activates when you go out and turns off when you return — perfect for daily routines. With flexible in-app settings (like alarm delay, alarm duration, and volume), the J35 fits different spaces, from quiet apartments to busy homes and shops.
A Tuya smart door/window sensor alarm that sends phone alerts and triggers a 100dB siren + flashing red light when a door or window opens.
What’s in the Box
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1 × J35 Sensor Alarm Main Unit (Siren)
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1 × Magnetic Contact Sensor
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Adhesive Mounting Tape
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User Manual
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