The G1 Lock from B&B Locks is available as an Electrical and Mechanical version.
This type of lock is mostly used in prisons, forensic psychiatric hospitals and juvenile detention centers. These locks are used because of their massive construction resulting in extreme resistance as well as their intelligent configuration which keeps all electronics in the frame avoiding sensitive cable transfers to the door leaf.
The following video explains how these Electric and Mechanical G1 Locks function.
G1 Electric Lock
This lock consists of a mechanical lock (with a massive sliding bolt) in the door leaf and an electrical striker plate (with 2 locking pins) in the door frame. When the sliding bolt is in fully ejected position it is blocked by these 2 locking pins making it extremely difficult the seperate door leaf and door frame since they are locked into each other.
The electro-mechanical G1 is a Fail Secure lock, which means that in case of a power failure, the lock automatically goes to (or remains in) the locked position. A mechanical override using a key is always possible.
For more technical & general characteristics download this document:
Characteristics Electro-Mechanical Locks – G1 series.
G1 Mechanical Lock
This is a mechanical lock with a massive sliding bolt in the door leaf. The sliding bolt can be locked mechanically (in the fully ejected as well as the fully retracted position) using a 17mm Europrofile cylinder. Retracting the sliding bolt is done mechanically by handle (9mm spindle). The bolt is automatically thrown by spring force when the door closes (when the latch is pushed in).
For more technical characteristics download this document:
Characteristics Mechanical Locks – G1 series.