ABUS MK4000 security device components purchased inexpensively from Mercateo

For reliable perimeter protection - For use on roll-up doors, etc. - Highly resilient due to aluminium housing - VdS certified: G 191589 The door opening detector is a magnetic contact for protecting large (garage) doors. Unauthorised opening is detected and reported to the alarm centre. The door opening detector is mounted chiefly on roll-up, sliding and tilting doors. The detector consists of a magnetic contact (reed) and a magnet. These are fitted parallel to each other. The electric circuit of this NC opening detector is closed in normal state (NC). If the distance between the reed and the magnet increases, the circuit is broken and an alarm reported. The detector is tamper-protected. The best installation location is in the middle of the entrance. The magnetic contact is mounted on the ground, and the magnet on the inside of the door at a distance of about 20 mm. The door opening detector is ideal as surface-fitted variant. It is absolutely water- and dustproof (IP 68) Its extremently robust aluminium housing protects it from damage when driven on. The door opening detector is VdS certified.