BYSECUR intelligent electro-mechanical surface-mounted security lock. opening mode fail secure (no). stainless steel, status led, opening sensor. programmable auto-locking. stainless steel, cylinder with keys included. suitable for fire alarm systems, for 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