Fermax's 24-apartment kit has everything you need to complete our electronic door opener installation in a 24-dwelling building.

What does this Fermax kit include?

• Street sign with twenty-four buttons.
• 24 electronic telephones.
• 4800 Feeder.
• Feeder 4830.
• Duox filter.
• 2 Duox line adapters.

What technical features does the 3425 phone have?

• Auto-start: This function is possible with the board of its own block, if the board is at rest, programmed as "0" and there is some talk channel available.
• Screwed on surface.
• Power: 18 Vdc
• Door release button and concierge call.
• Selectable ring tones.
• Private communication. Secret of conversation.
• Consumption:
• At rest: 15 mA.
• Active without audio: 112 mA.
• Communicating tone: 117 mA.
• Active audio: 125 mA
• Tone monitoring: 271 mA

What is a Duox line adapter used for?

At DUOX installations, a line adapter device must be installed. Its function is the adaptation of the transmission line. It has a bridge to make different adaptations depending on the type of installation.

Small size allows installation in electrical registers. They can be bolted directly to the wall.