# ACNSEM3L controller for 2 traffic lights | Stagnoli

URL: https://www.stagnoliaccessories.com/en/light-signalling/2-traffic-light-regulator
Fonte: Stagnoli T.G. S.r.l. (Stagnoli Accessories), Lonato del Garda (BS), Italia
Aggiornato: 2026-11-07

> The ACNSEM3L control unit manages 2 traffic lights with 2 or 3 lights and is designed for alternating one-way traffic in residential complexes, companies and car parks.

![Garage access ramp with two-way traffic regulated by traffic lights](https://www.stagnoliaccessories.com/theme_stagnoli_accessories/static/src/img/ctx-acnsem3l-rampa.webp)

Control unit for 2 traffic lights

# ACNSEM3L

One board for 2 traffic lights, 12 to 230 V. For alternating one-way systems.

[Request a quote](https://www.stagnoliaccessories.com/en/contacts?tema=semafori&prodotto=ACNSEM3L)

[Configurations](https://www.stagnoliaccessories.com/en/light-signalling/2-traffic-light-regulator#configurazioni)

**2** traffic lights, 2 or 3 lights

**12–230 V** traffic lights

**LCD** 5 languages

**IP44** enclosure

**−20/+60 °C** operating

**IN3** emergency

Available configurations

## Booking, time-based or mixed.

ACNSEM3L switches two 2- or 3-light traffic lights, from 12 to 230 V, and is programmed from the LCD display in five languages.

![ACNSEM3L control unit open showing the circuit board](https://www.stagnoliaccessories.com/theme_stagnoli_accessories/static/src/img/acnsem3l.webp)

Booking

The cycle starts when the sensors are activated (NO/NC)

Time-based

Autonomous cycle on the set times

Mixed

Automatic switching with priority to the inputs

Voltage

### 24 V o 230 V.

The board works at 24 V ac/dc; the ACNSEM3L230 kit adds the mains transformer. The traffic lights can be 12–24 V or 230 V.

**24** V

Board only

Cycle times, terminal block and sensor wiring in the documentation.

[Find out more](https://www.stagnoliaccessories.com/en/docs/control-units/acnsem3l.md)

At a glance

## What is the ACNSEM3L control unit

ACNSEM3L is Stagnoli's control unit for 2 two- or three-light traffic lights, designed for alternating one-way systems in apartment blocks (slopes and ramps), companies and car parks. The microprocessor board has an LCD display in 5 languages to program all cycle times, works in booking mode, time-based or in mixed mode and switches 12–24 V or 230 V traffic lights. It has a dedicated emergency input and an IP44 enclosure.

- Traffic lights: 2, with 2 or 3 lights
- Traffic light supply: 12–24 V o 230 V
- Board: 24 V ac/dc (230 V as kit)
- Display: LCD, 5 languages
- Logics: Booking, timed, mixed
- Emergency: Dedicated IN3 input
- Protection: IP44
- Temperature: −20 / +60 °C

Fields of application

## Where ACNSEM3L works.

Wherever two vehicle flows have to take turns in the same passage.

![ACNSEM3L control unit open on the wall of a residential garage](https://www.stagnoliaccessories.com/theme_stagnoli_accessories/static/src/img/ctx-acnsem3l-garage.webp)

### Residential ramps

Alternating one-way system with custom clearance times.

ACNSEM3L230 + 2 × Chronos

![Entrance of a residential garage](https://www.stagnoliaccessories.com/theme_stagnoli_accessories/static/src/img/ctx-centrali-condominio.webp)

### Residential and industrial gates

Access controlled with photocells or magnetic loops.

ACNSEM3L + AFAP20 + 2 × ASFRV

![Loading bays](https://www.stagnoliaccessories.com/theme_stagnoli_accessories/static/src/img/app-baie-ext.webp)

### Loading and unloading areas

Coordinating heavy vehicle access phases.

ACNSEM3L + DA035 + 2 × ASF25L2RV

Case studies

[Alternating one-way system: control unit and traffic lights in 3D](https://www.stagnoliaccessories.com/en/use-cases/alternating-one-way-traffic.md)