Fermax DIN Mounted Telephone Interface

Fermax F-4545 DIN Rail Telephone Interface for Door Entry

The Fermax F-4545 is a DIN-10 rail mounted telephone interface that connects a Fermax door entry system to a standard telephone line. It enables two-way communication and door release activation from any landline or wireless telephone, and can divert door entry calls to a programmed external telephone number.

The interface supports both analogue 4+N and VDS digital installations. In 4+N mode it operates in Single Call Mode (SCM) only, responding to a single call from the street panel. In VDS mode it supports both SCM and Multiple Call Mode (MCM), where VDS call codes are converted to telephone numbers for routing to different extensions — ideal for office environments with a telephone switchboard.

Key Features

• Compatible with 4+N (SCM) and VDS (SCM and MCM) systems
• Call forwarding to up to 2 external telephone numbers
• Communication with up to 2 door panels
• Remote access from external line protected by PIN code
• Remote door opening and relay activation from telephone
• Half-duplex, full-duplex and simplex audio modes
• Guard unit call capability
• Configurable call ring time, conversation time and divert delay
• DIN-10 rail or wall-mount installation
• Factory reset capability

Technical Specifications

• Operating temperature: -5 to +40 degrees C
• Relative humidity: 5-90% (non-condensing)
• Consumption 12 Vac (4+N): standby 60 mA, max 400 mA
• Consumption 12 Vdc (4+N): standby 125 mA, max 470 mA
• Consumption 18 Vdc (VDS): standby 55 mA, max 220 mA

Dimensions

• 175 x 90 x 60 mm (H x W x D) — DIN 10 format