Auto-blocking pin when opening and closing. Gears in nylon: low noise, better gliding, no rust. Electronics protected for outdoor use. Easy connection by removable connector. Already contact for automatic re-locking when door is closed. Audible signal in case of incorrect locking. Consists of 2 parts, can be mounted horizontally or vertically. Standard delivery: round cylinder with 3 keys + with possible adaptation to door thicknesses between 40 and 90 mm. Power supply: 12 V DC. Consumption: 20 mA holding current; 410 mA peak current. Treated steel. Working current. Reversible. Suitable for outdoor use. Surface mount installation. Ideal for installation on exterior doors or basement doors. Quiet operation. Sound signal for position. Possible to connect to all types of access control. Available in the versions: single cylinder (MVA) ; cylinder + rotary knob (MVM).