The Bitron AN7775 is a relay/switching module for dual-entrance video or audio intercom systems in Bitron 4+n and 5-wire installations.

It automatically switches communication and video between two entrance panels.

Main functions:

• Supports 2 entrance panels (2 doors/entrances)
• Automatic switching between active panels

Prevents simultaneous calls:

• When one entrance is active, the other receives a busy tone

Used in:

• Bitron video intercom systems
• 4+n and 5-wire installations
• Domular / T-Line systems

Technical details:

• Operating voltage: 12–20V
• DIN rail module