🌾 HomesteadingDeals › Home Security

Sanjie Door Window Alarm Sensors, 5 Pack, 125dB, Volume Control | 125dB wireless sensors alert when doors or windows open, with adjustable volume, easy installation and long battery life

Price last checked 2026-10-19. Prices change often — confirm on Amazon before buying.

As an Amazon Associate, HomesteadingDeals earns from qualifying purchases on the links below. Prices and availability are refreshed every few hours but may have changed since.

About this item

• Peace of Mind - Door window alarms guard you and your home's security. Alarms can also keep the safety of kids as well as the elderly who need care
• Wide Use - Magnetic sensor will alarm or chime if separated.Can be used in pool, home, apartment, store, office, garage, RV, warehouse, hotel and more. Alarm sensor can be installed on sliding door/window, cabinet, drawer, etc
• Easy to Install - Tear off the 3M double-sided tape on the back of the wireless alarm and install it on the door or window, etc. Turn on the switch, set the mode and ready to use. It is recommended that the alarm be installed indoors
• Volume Control - Alarms have 3 modes:125dB Alarm(loud enough), 100dB Alarm, 100dB Chime (dingdong 2 times). When the door window sensor is opened,it will alarm continuously for 31 seconds and will not stop until the window or door is closed
• Long Battery Life - Powered by 3 LR44 button batteries supplied. Normal life of the alarm is up to 13 months. When the alarm is in low battery, the indicator light will flash to alert you

Product details