Magnetic sensor detector switch
মেগনেটিক সেন্সর ডিটেক্টর সুইচ
1. Easily mounted by window tape or a door.
2. Magnetic sensor detector switch the entrance to protect your home or office if you are inside or outside.
3. Warning door / window is provided free of charge in the package.
4. Operated by 3 pcs 1.5 V LR44 button cells (battery included in the package)
