Color: as picture shown Dimensions:8.8*4.8*3.8cm Weight: 96g 4 in 1 Mode: This alarm with 4 modes. 1. Delay alarm (sounds 'Di-Di-Di' from 0dB to 108dB if door remains open for 3/15/30/60s) 2. General alarm (alarm stops if door closed); 3. Constant alarm (constant alarm even door closed); 4. Door opening chime (sounds "DingDong" once the door is opened)Loud 108 dB alarm: door and window alarm helps to effectively deter intruders/thieves with a loud alarm of 108 dB. You can easily set the appropriate mode. according to your needs. Widely used; : door alarm sensor magnetic trigger protecting the house through the entrance of the door window and suitable for for safe, cabinet, freezers, refrigerators, swimming pool sliding door, store, office, apartment, hotel, etc. The size is manual measurement, there will be 1-3cm difference. There are some differences between the real object and the picture