Foss Europe LIFE smoke alarm 230V Wireless - WAVE Black

With 9 V back-up battery. Interconnection: Wireless 868 mhz up to 20 pcs., also with 10-year battery model (art. no. 200255) or with cable up to 40 pcs. of the same type. Hush function. 5 year warranty. Supplied complete with battery and mounting bracket...