Can’t seem to find the operating instructions for your safe or safe lock? Not to worry! This page contains downloadable operating instructions for the most common locks in PDF format, organised by electronic locks – including the fingerprint locking system and mechanical combination locks. We have also put together some essential technical information for you to download. If you are not sure about what type of lock your HARTMANN TRESOR has, simply give us a call or get in touch using our contact form.