Sargent and Greenleaf
2740B Lock
Sargent and Greenleaf’s 2740B lock integrates new designs to produce an easy-to-operate electromechanical lock specifically engineered to secure GSA-approved security containers. The lock features a familiar left-right-left dialing sequence combined with direct-dial technology for fast, easy access; twenty man-hours’ resistance to expert manipulation; built-in thermal protection provided by an integral thermal relock component; change key for quick, easy combination changing; a stainless steel lock bolt that is strong enough to resist 600 lbs. of force; single user and dual control modes of operation that are selectable and changeable and more.
http://www.sargentandgreenleaf.com/2740B/