Welcome to the Magnetic Solutions Web Site magnetic lock, locks, electromagnet, electromagnets, shearlock, shearlocks, sherlock, door hold magnets, door hold magnet, solenoids, solenoid, access control, key switch, switches, push switch, solenoid bolt, bolts Magnetic Solutions produce a large range of electromagnetic and permanent locks, door hold magnets, solenoids and access control for use in door locking, holding doors open and many other uses.