The Series 70 Digital Microprocessor Door phone Systems technology has been conceived to make very large and complex installations with the use of a minimum number of wires and standard two-wire AN 9136 doorphones. Up to ten thousand users can be connected to the system with only six wires in the riser(s) and two wires for connecting each doorphone. The system can be used to make complex installations – up to six main and ten secondary entrance panels, all with ‘busy’ indicator LED – without need for switching devices. Furthermore, mixed digital systems can be made, e.g. with digital panels for the main entrances and analogue panels for the secondary ones. Particularities of the Series 70 Microprocessor Digital Systems are,for instance, the buffer battery for periods of power blackouts, timed door lock release code, message indications and possibility of remote or PC programming: these features herald future Building Automation concepts and position Bitron Video Microprocessor Digital Systems among the most advanced available on the market today.

AN 6983- MDK 70/C Digital Doorphone Unit

The MDK 70/C digital doorphone unit consists of three main
pre-assembled parts:
• '1+1' doorphone audio module
• Electronic directory with LCD display and capacity of storing up to 400 users
• Digital 16-button keypad Calls can be made by entering
the code directly on the keypad, or by selecting the user’s name from the directory. The keypad is also used for programming (storing names, messages, timed door lock
release codes, etc.). Embedding boxes are not included in the supply.

AN 7064 - CDP 70 Digital Porter's Switchboard

Optional device for concierge services with plenty of sophisticated functions:
• Management of up to 10,000 call codes
• Electronic directory capable of 400 names and respective codes
• Possibility of working in pair with another switchboard in reciprocal exclusion mode
• 'Day/night' function with filtered or direct calls, respectively
• Possibility of receiving alarm signals, one from each user
• Queuing and storing of pending calls
• Adjustable audio, transmission and ringer volumes
• Directory management via PC and RS 232 serial line
• Connection via telephone socket, SCART socket and DIN 8
connectors.

AN 9680 - AD 80 Power Supply

This power supply is particularly suitable for microprocessor digital systems. One only power supply is sufficient to power one doorphone system with up to 15 decoders; add supplementary power supplies to the column for larger systems. Housing:
12- module DIN box.

Similar electrical functions of the AN 7429 (A 700) model. This power supply has provisions for a 12V - 6.5A lead battery (not included) to ensure audio service and emergency door lock release in the event of temporary electrical power blackouts. Two ADT 70 power supplies are required in each digital system.

The Series 70 Digital Microprocessor Door phone Systems technology has been conceived to make very large and complex installations with the use of a minimum number of wires and standard monitors such as AV 6000, AV 6018 or AN 8310.
Up to ten thousand users can be connected to the system with only ten wires in the riser(s), 5 wires for connecting each monitor or only two for connecting additional doorphones.
The system can be used to make complex installations – up to six main and ten secondary entrance panels, all with ‘busy’ indicator LED – without need for switching devices.
Furthermore, mixed digital systems can be made, e.g. with digital panels for the main entrances and analogue panels for the secondary ones.
Particularities of the Series 70 Microprocessor Digital Systems are, for instance, the buffer battery for periods of power blackouts, timed door lock release code, message indications and possibility of remote or PC programming: these features herald future Building Automation concepts and position Bitron Video Microprocessor Digital Systems among the most advanced available on the market today.

AN 6975- MDK 70/C - Digital Video Doo rphone Unit

The MDK 70/V video digital doorphone unit consists of three
main pre-assembled parts:
• Standard monochromatic video doorphone module with audio unit, CCD camera and built-in infrared light
• Electronic directory with LCD display for storing up to 200
users
• Digital 16 button keypad Calls can be made using the keypad by entering the code directly or by selecting from the electronic directory. The keypad is also used for programming (changing names, messages, timed door lock release codes, etc.). Embedding boxes are not included in the supply.

AN 6991 - MDK 70/VC - Digital Video Door phone Unit

This digital video doorphone unit is equivalent to the one above for use in colour systems.

AN 7064 - CDP 70 Digital Porter's Switchboard

Optional device for concierge services with plenty of sophisticated functions:
• Management of up to 10,000 call codes
• Electronic directory capable of 400 names and respective codes
• Possibility of working in pair with another switchboard in reciprocal exclusion mode
• 'Day/night' function with filtered or direct calls, respectively
• Possibility of receiving alarm signals, one from each user
• Queuing and storing of pending calls
• Adjustable audio, transmission and ringer volumes
• Directory management via PC and RS 232 serial line
• Connection via telephone socket, SCART socket and DIN 8
connectors.

AN 9680 - AD 80 Power Supply

This power supply is particularly suitable for microprocessor digital systems. One only power supply is sufficient to power one doorphone system with up to 15 decoders; add supplementary power supplies to the column for larger systems. Housing:
12- module DIN box.

Similar electrical functions of the AN 7429 (A 700) model. This power supply has provisions for a 12V - 6.5A lead battery (not included) to ensure audio service and emergency door lock release in the event of temporary electrical power blackouts. Two ADT 70 power supplies are required in each digital system.

AN 7049 - DD 70 Decoder

Digital 5-user floor decoder; code programming using jumpers; total conversation privacy (including door lock release function). Not suitable for systems equipped with AN 7064 switchboard.

5-user decoder with similar basic functions as the model above. Furthermore, when combined with a porter's switchboard, the device provides intercom function between users and transmission of local alarm signals (each function requires the addition of a dedicated wire in the common riser). Housing: 12- module DIN box.

Digital decoder capable of serving up to 24 users with the basic functions of the smaller DD 70 model. Code programming using jumpers and total conversation privacy (including door lock release function). Cannot be used in systems with CDP 70 porter's switchboard. Housing: 12- module DIN box.

The DDU 70 single decoder has the characteristics of the AN 7049 (DD 70) model and a single board for fitting inside the AN 8310 monitor.