- Great security product<br />- Host power: 3*LR44 batteries (included)<br />- Easily mounted by adhesive tape to window or door<br /><br />                                                                                                                                Dimensions: 2.09 in x 1.38 in x 0.71 in (5.3 cm x 3.5 cm x 1.8 cm)<br />Weight: 1.27 oz (36 g)<br /><br />