BYSECUR surface-mounted electromechanical smart security lock, opening mode fail safe (nc). stainless steel, status led. opening sensor. programmable auto-locking. stainless steel, cylinder with keys included. applicable in fire protection systems, installation on wooden, metal and glass doors. bolt length 20 mm. power supply dc 12 v / 350/25 ma, dimensions 61.25x100x130 mm, weight 1.45 kg