Wireless Door Reminder Door Alarm Sensor Door Open Alarm Indicator for Office/Home/Store When Entering Specification: Product Name: Door Reminder Product color: White Material:ABS Gross weight: 0.22lbs/0.100kg Product Dimensions: /3.15x3.15x1.10inch/8x8x2.8cm Packing size: 3.94x3.54xx1.97inch/10x9x5cm Features: Customisable voice, recording reminder, unlimited language settings Easy to operate, ultimate experience, human body sensing, voice announcement, voice recording, long life, easy to install, just attach the double-sided adhesive sticker and it can be fixed at the entrance, also can be used as a key hook Smart voice reminder to avoid embarrassing scenes, forgetting to bring keys, forgetting to wear a mask, forgetting to turn off appliances, forgetting to close doors and When the sensor detects someone passing by, it automatically announces the recorded voice, with an initial announcement inside the machine The volume can be adjusted to three LEV-ELS, depending on your needs, for everyday use, it is recommended to select 1-2 LEV-ELS. Suitable for busy parents, office workers and the elderly Three AAA batteries (not included), low power consumption, long battery life, no need to replace batteries frequently Package Include: 1x Door Reminder 1x Specification Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.