ASSA 2970/3970/5970 Explanation 2970/3970/5970's cell door locks with lever lock alternative cylinder lock. Lever locks 2970, 3970 and 5970 are designed for cell doors in prisons and jails etc. EML 5970EML5970 is an electromechanical door lock cell. ASSA 1735/187351735/18735 is intended for locking windows, gates etc. Do you want to create a safe lock environment? ASSA OEM has created "The lock guide by ASSA OEM", and it's made to give you knowledge and tips about approved lock sets. We really encouring poeple to read our tips and guidelines here: The lock guide Want to download our product catalogues? If you prefer to download our product catalogue - you can download it here! We also provide instructions, declarations and other documents in our download documents section.Check it out!