They turn on or off with the swing of a handle that can lock in either position. The magnets immediately release parts when turned off. The magnets also feature Test Talons, an additional test position which lets users undertake a trial lift when the load feasibility is unknown. If the magnet successfully lifts the part, the handle can be put in the "on" position with a safety factor of 3 X the rated load. The magnets are compact, light-weight, maintenance-free, and made of patented rare-earth materials.
Alpha Workholding Solutions
460 Cardinal Lane
Hartland, WI 53029
(877) 217-6900
alphaworkholding.com/