This digital lock is mechanical rather than electronic and does not require batteries to operate. We do have a range of Digital Door Locks that are electronic and powered by batteries. Battery life would depend on how often you use it. Each lock will give a warning of low battery and there is a back up in case of lock out by either a key override or external battery point.

Unfortunately, none of the digital door locks conform with BS3621. You will need to use an insurance approved deadlock in order to meet BS3621 standard.

Unfortunately attempting to install a mechanical lock to a UPVC door can be quite difficult and in most cases can cause damage. However if you are looking for a lock especially designed for a door with a multi-point locking system I can recommend the Keyfree Connected with Remote - Chrome (Satin Chrome).