https://www.jpcorry.com/jp-corry-products/centurion-digital-combination-lock-holdback-sc/
Centurion Digital Combination Lock & Holdback Sc
Description
The Asec mechanical digital door lock is a versatile and cost-effective way of restricting access to code holding personnel only.
It has an optional hold open facility (the sliding switch can be reversed and used as a blanking plate if this facility is not required) and the code is easy to change and
This digital lock is supplied complete with a tubular latch and is ideally suited for light commercial / residential indoor applications on doors between 35mm and 65mm thick.