MSL's BMEH/BMER box magnets are a staple of access control systems for doors, hatches, shutters, grilles and vents as well as being a straightforward security measure. Magnet Schultz’s Heavy Duty Box Magnets offer the highest specifications in robustness with a fully enclosed and sealed assembly to IP68 standards with monobloc pole faces and a powerful magnetic holding force up to 640 Newtons for applications that demand totally dependable security. Boxed magnets are available in energise-to-hold and energise-to-release variants, operating from a 24V DC or AC (with rectifier plug) voltage supply. Other voltages are available on request.