Farfisa EX320R
Farfisa Universal Handset
The Farfisa EX320R is a versatile, high-compatibility audio intercom handset from the Exhito series, specifically designed as an ideal universal replacement unit for legacy door entry systems. Engineered to integrate with standard 4+N conventional wiring architectures, this plus-version audio indoor station supports both electronic call tones and traditional AC (alternating current) buzzer calling mechanisms. Equipped with an internal electro-mechanical buzzer and an expansive 8-button capacity (including a dedicated primary door lock release button alongside auxiliary switches for secondary lock activation, staircase lighting or intercommunication), the EX320R provides an essential, cost-effective maintenance solution for residential blocks, commercial offices and multi-tenant property upgrades.
- Product Model: Farfisa EX320R
- Series Name: Farfisa Exhito Audio Range
- Primary Role: Universal replacement audio handset
- Wiring Compatibility: Conventional 4+N multi-wire systems
- Call Signal Types: Electronic call tone and AC mechanical buzzer
- Control Capacity: 8 push buttons (door lock release plus configurable auxiliary functions)
- Mounting Style: Surface wall mounted
- Physical Footprint: 8.3cm (W) x 21.8cm (H) x 6.2cm (D)
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Technical Features and System Compatibility
Universal 4+N Retrofit Compatibility
The standout strength of the Farfisa EX320R Exhito handset lies in its exceptional retrofit capability across legacy building risers. Designed to operate across traditional 4+N cabling (4 common cores plus 1 call line per apartment), it serves as a direct swap out for obsolete or failing intercom units. The internal terminal array provides clear, accessible termination points for common audio transmission lines, power ground, electronic call inputs and lock release triggers.
Dual Calling Mechanism: Electronic Tone and AC Buzzer
Unlike standard modern handsets that only accept electronic chimes, the EX320R includes a built-in mechanical buzzer. This dual capability allows installers to fit the unit on modern electronic call systems as well as older alternating current systems that rely on high-volume mechanical buzzing. Having both options on a single internal board simplifies inventory for service engineers who maintain varied housing portfolios.
8-Button Expansion for Complex Control
Constructed from white impact-resistant plastic, the EX320R housing features up to 8 mechanical control buttons. While the primary button operates the main electric door release, the remaining auxiliary positions allow installers to wire extra controls for communal lighting, secondary gates or private intercom channels between internal units without needing additional control boxes.
Installation and Maintenance Guidelines
When replacing an older unit with the EX320R, map out the existing wiring connections carefully before disconnecting the legacy handset. Verify whether the existing system utilises electronic chime signals or AC buzzer inputs, and align the internal connections accordingly. Make sure all terminal screws are tightened securely on the wall plate to maintain clear two-way audio communication and prevent voltage drop across lock release wires.
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