White Life smoke detector wave 230 v with 9 v back-up battery. Interconnection: wireless 868 mhz up to 20 paragraph, also with it 10 year battery model art 100255 past, the laws 10 year heat alarm art. 100265 . With cord can coupled up to 40 paragraph. Hush break function. 5 Year going... Read throughout product description by to press on buy button.
