Basic electronics size 4 for phones with integrated electronics.

- For up to 8 call buttons, 1 keypad, 1 speaker, 1 microphone.
- With 2 relays, 1 alarm input, 1 video output.
- Large cabinet with space for electronics features, including voice announcements, real time clock,
Display.
- Suitable for: phone size 4
- Without lighting cable.
- Dimensions (H x W x D): 380 x 118 x 72 mm.
Electronics:
- Connection to analog extension or connection of a main analogue telephone system.
- Full duplex telephone.
- Power supply via a / b line.
- 1 watt booster amplifier integrated (12 V DC power supply is required).
- Electronically adjustable volume.
- Built-in heater (12 V DC power supply is required).
- 2 potential-free contacts with various switching functions contain (eg door opener).
- Sammelruffunktion / redial.
- Programmable via telephone with tone dialing (DTMF) or buttons on the board.
- Door opener from inside via DTMF dialing.
- Possible connection of various Behnke camera modules.