- Ref: 11721-60-2 - Weight: 2.1Kg - Backset 60mm - Handing: - Without Mechanical ButtonCisa high quality electric lock. Pull resistant up to 2000kg, tested for one million cycles. Available for inward and outward opening and for left and right handed doors. With or without mechanical button. Features the Cisa patented dead locking latch. Zinc-plated steel case and striker. 12 V ac CE. Suitable for heavy as well as light weight doors. Supplied with three keys, fixing screws and fitting instructions.