Product Specs:1. Power: DC 12V / 1A2. Backup battery: Lithium rechargeable battery 7.4V3. wireless alarm systems; Zioncqeup Ssnblog`s recent blog post, distance: 100~150m (in open area); 30m (in door)4. Working temperature: -20℃~+55℃5. Quad Band GSM Frequency: 850/900/1800/1900MHz6. Receiving frequency: 315MHz7. Humidity: 40%~80%8. Dimensions: (7.09 x 5.32 x 1.02)" / (18 x 13.50 x 2.60)cm (L x W x H)One other cool function of some wireless safety methods is the house automation means. This know-...