Product Features Digital Electronic lock EN 1300 certified, controlled by a high performing electronic system provided by permanent memory. Opening/closing with recessed knob and locking by electromagnet. Internal power with alkaline battery (not included). High quality membrane keyboard with 4 leds. Acoustic and visual signals to confirm codes, errors and internal battery deficiency. Emergency external power outlet with contacts directly on keyboard. Nickel-plated rotating steel bolts ø 22mm (GMT/3 ø 18mm, fixed). Lock mechanism protected by a manganese-steel plate. Horizontal and top vertical bolts protected by drill resistant manganese-steel plate 3mm thick, placed askew in order to get the best resistance to drilling. Special door battens for exceptional resistance against robbery attempts using a sledge hammer. Internally welded by a robot-controlled system. Front panel seam-welded to the casing by a robot-controlled system. Removable internal shelf. Base and back fixing holes. Screw anchor fixing bolts provided. Oven dried thermo-hardening powder painting. Emergency opening with double-bitted key lock (EVO-LOCK).