What is a 2-wire video door phone system?
The 2-wire systems are the most widespread technology in video door phone installations in Spain. They use only two conductors to transmit power, audio, and video, which simplifies wiring and reduces installation costs.
If your building or home already has 2-wire wiring, you’re in luck: you can upgrade your video door phone without construction work.
Advantages of the 2-wire system
- Simpler and more economical installation
- Compatible with most buildings constructed in recent decades
- Easy monitor replacement without changing wiring
- Wide range of compatible monitors
Which Tegui video door phone monitor to choose for 2 wires
Classe 100V16B (374511) — The most popular
The Classe 100V16B is the reference monitor for 2-wire installations. 5" color screen, hands-free, and compact design. Direct replacement without changing wiring.
- 5" color screen hands-free
- Compatible with 2-wire BUS SCS
- Ref. 374511 · €119,95
Classe 100V16E (374521) — The most versatile
Expanded version of the Classe 100V16B with greater configuration flexibility. Ideal for installations requiring additional functions.
- Color screen hands-free
- Compatible with 2-wire BUS SCS
- Ref. 374521 · €151,01
Classe 300X New (344745) — The most advanced
For those who want the best: 7" touchscreen, WiFi, BTicino Home+Security app, and compatibility with Google and Alexa. Remote opening from your phone anywhere.
- 7" Full HD touchscreen
- WiFi + Home+Security app
- Compatible with Google and Alexa
- Ref. 344745 · €330,33
Classe 300EOS with Alexa (344842 / 344884) — The smartest
Video intercom and smart speaker in one. Voice control, remote opening, and integrated home automation. Available in white (344842) and black (344884).
- Built-in Alexa
- WiFi + remote opening
- Ref. 344842 · €439,44 | Ref. 344884 · €443,96
Quick comparison
| Model | WiFi | Mobile app | Ideal for |
|---|---|---|---|
| Classe 100V16B (374511) | No | No | Affordable replacement |
| Classe 100V16E (374521) | No | No | Greater flexibility |
| Classe 300X New (344745) | Yes | Yes | Top performance |
| Classe 300EOS Alexa (344842/344884) | Yes | Yes | Smart home |
How to know if your installation is 2-wire?
The easiest way is to count the wires connected to the current monitor. If there are 2 wires, your installation is 2-wire. If you have doubts, a professional installer can verify it in a few minutes.
Professional installation
Replacing a monitor in a 2-wire system is one of the simplest installations, but we always recommend having a qualified installer to ensure proper operation. Contact our team if you need advice.