NISTA DEVICES GmbH 2013 © All Rights Reserved52 Product OverviewThis manual provides installation and programming instructions for the following products models: Analog Door phone with the Touch or Piezo 16-buttons Keypads: SD-40A ,SD-40P, SD-40AC, SD-40PC Analog Door phone with the Touch or Piezo Single Button: SD-41AC, SD-41PC Analog Door phone with the Touch Single Button Mini housing edition: SD-30A, SD-30PModel Front Panel DescriptionSD-30A Plastic Panel with Touch Sensitive Single ButtonSD-30P Aluminum Panel with Piezo Single ButtonSD-40A Plastic Panel with Touch Sensitive KeypadSD-40P Aluminum Panel with Piezo KeypadSD-40AC Plastic Panel with Touch Sensitive Keypad+VideoSD-40PC Aluminum Panel with Piezo Keypad+VideoSD-41AC Plastic Panel with Touch Sensitive Single Button+VideoSD-41PC Aluminum Panel with Piezo Single Button+VideoBasic Features PBX extension (SLT) analog line interface Full telephony Keypad and Single Button configuration Piezo outdoor and Touch indoor keypad housing The Single button mini housing edition Door Access Code protection Day and Night calling to different pre-defined operators Speed dialing memories Direct call to a local and remote destinations Door opening from remote extension during conversation Telephony connection control:o Busy tone detectiono Telephony line Loop disconnection detectiono Continuous tone detection and disconnection High quality video control Local and Remote maintenance Administrator Login password protection Digital volume control The electrical door lock powering support Anti-vandal housing Reliable and stylish design Indoor unit backlit keypad Easy to install and support