Fermax Basic LOFT Telephone with Adjustable Volume Control (BUS2)

Fermax F-3396 Basic LOFT Audio Telephone for BUS-2 Systems

The Fermax F-3396 is a wall-mounted audio handset telephone for BUS-2 door entry systems. It provides two-way audio communication with the outdoor panel, electric lock release activation, and concierge/guard unit calling. The handset is manufactured in durable ABS plastic with a textured finish and features an internal magnet for secure repositioning on the base unit.

The BUS-2 digital bus system simplifies wiring by eliminating individual call wires — the call is made via a digital code transmitted over the two-wire bus. Programming is carried out via a dedicated button on the handset.

Key Features

• Two selectable call tones
• Three-position volume switch (Off / Medium / Full)
• LED call indicator
• Door release button (activates electric lock during conversation)
• Concierge/guard unit call function (when handset is on hook)
• Electret microphone with 50 ohm dynamic resistance
• Programming via dedicated button on handset
• Apartment door bell push-button connection (P1 terminals)

Technical Specifications

• Power supply: 24 Vdc (BUS-2 powered)
• Current draw — standby: 20 mA, ringing: 315 mA, audio active: 290 mA
• Electronic call signal: 8 to 12 Vpp
• Speaker: 1.75 inch, 16 ohm
• Microphone: electret, 50 ohm dynamic resistance
• Operating temperature: 0 to +40 degrees C
• Maximum call ring duration: 30 seconds
• Maximum conversation time: 90 seconds
• Bus type: BUS-2 (non-polarity 2-wire)