ขาย ★★★★★Door and Window Alarm for Home Anti Theft Alarm Systems Magnetic Sensor Time Delay Alarm Pool Door Alarm for Kids J ราคาที่ดีที่สุด

Super loud 110dB alarm. When someone opens the door or window illegally (the relative position of the primary and secondary parts changes), the alarm can issue a strong alarm, warning the intruder to leave and remind the owner. Easily mounted by adhesive. Type to window or door. Perfect entry warning for homes,apartments,mobile homes,offices,hotel rooms,garages,and more. Magnetic sensor switch detects your door or window. Perfect for home, garage, apartment, dorm room, mobile home, RV, office and more 4 Modes: Alarm mode: give out alarm when the door is open; the door is closed then the sound stops at once. Constant alarm mode: alarm goes on at least 10 seconds when the door or window is open once. Closing door reminder mode: remind you the door is still open when you don't shut the door. Doorbell mode: "DingDong" sound when the door is open once to remind you someone come in or out. How to transform 4 function? On & off the switch 1 time, it is in Alarm mode. It alarms when doors or windows is open; Stops when they are closed. On & off the switch 2 times, it is in Constant Alarm mode. It alarms at least 10s when triggered. On & off the switch 3 times, it is in Closing-door reminder mode. It sounds "Di--Di-Di" when doors windows is open; Stops when they are closed. On & off the switch 4 times, it is in Doorbell mode. It sounds "Dingdong" when doors or windows is open. Noted: Every time switch on & off button should within 3s after the beep of the last switch on & off. Otherwise it start anew.Battery low indicate: When the alarm battery runs low, every time you turn on the power, the alarm host will sounds " Du" for about half second. When the alarm is in low battery state, it still can work for about 10 ~30 days, please replace the battery. Installation Choose the location of a door or window to install the alarm. Paste the alarm and themagnet on the door and the doorframe with the sticker. Please notice that the line on the magnet should match the line on the alarm. The magnetic sensor is at the right side of the host, so the magnet should be installed on the right side of the alarm host . If the alarm is installed on the door, please install the magnet on the frame of the door. If you install the alarm on the frame of the door, then install the magnet on the door. Make sure that when the door is opened, the magnet is separated from the alarm, so that it can be detect and trigger alarm. When installing, make sure the distance between the alarm and the magnet should not be more than 10mm when the door or window is closed. Specification Material: ABS Color: White Battery standby life time: More than 12 months Alarm volume: 110dB (Test distance is 30cm) Gap distance of installing(the distance between the host and magnet): Less than 1cm Operating temp: 10 degree below zero to 60 degree above zero Storage temp: 20 degree below zero to 60 degree above zero size: 56 * 15 * 30mm Batteries: 3pcs LR44 batteries for the host. (Contain) Frequency: 433.92MHz Package Contents: 1 * Alarm Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.