GRABOTE 4x Door Window Alarm, Super Loud 100 dB Wireless Door Magnetic Sensor Alarm for Home Security System, Pool Door Alarm for Kids Safety Toddler Door Open Alarm Sensor

✎【SMART DESIGN】The alarm and magnetic stripe are separated more than 0.39inch(10mm), it keeps going off until you close door(make them connection) or turn it off(switch to the button “OFF”).
✎【ALARM ON AND OFF MODE】 When someone come in and open a door or window, making the gap more than 0.5 inches, the alarm will immediately send out an alarm (high loud, 100 dB) . If you want to keep the door open, please switch to the alarm off mode.
✎【HOME AND OFFICE SAFE】Remind you immediately when the pets or someone come in. Prevent theft when no one at home, and the loud alarm will scare the thief so that you can sleep well at night without worrying about the intruders.