DALI Rotary Dimmer Switch – Push ON/OFF (SR-2400RB)

The DALI Rotary Dimmer is a wall-mounted lighting controller designed for DALI lighting systems, providing simple and intuitive control of both ON/OFF operation and brightness adjustment through a single rotary knob.

Its modern black wall-mounted design makes it suitable for homes, offices, hotels, showrooms, and commercial environments where convenient manual control of DALI-compatible lighting is required.

Simple Rotary Control

The dimmer is designed for intuitive everyday operation:

• Press the rotary knob: Switch the light ON or OFF.
• Rotate clockwise: Gradually increase brightness up to 100%.
• Rotate counterclockwise: Reduce brightness down to 1%.
• A customized minimum brightness level can be stored by pressing and holding the knob for more than 5 seconds until the light flashes.
• The stored minimum brightness setting can also be deleted to restore the 1%–100% dimming range according to the product operating instructions.

DALI Lighting Control

The unit features a DALI MCU with a built-in DALI Bus power supply, allowing it to communicate with and control compatible DALI lighting equipment.

A single control circuit can supply DALI power for up to 50 DALI devices when using one controller, while larger multi-controller configurations are also supported according to the specified wiring arrangement.

Connected lighting responds smoothly and simultaneously to brightness adjustments, making the controller suitable for lighting installations requiring convenient control from multiple points.

Installation & Wiring

The controller is designed for recessed wall installation with an overall size of 80 × 80 × 53 mm.

Connections on the rear include:

• L / N: AC mains power input
• DA+ / DA-: DALI signal output
• Operating Voltage: 100–240V AC
• Maximum DALI cable length: 300 m
• Permitted cable cross-section: 0.5–1.5 mm²

The built-in power supply can power the DALI Bus while connected to AC mains, while additional control units can be powered through the DALI Bus according to the specified system configuration.

Important: Electrical installation should be carried out by qualified personnel with the power supply disconnected during installation.

Electrical Specifications

• Model: SR-2400RB
• Type: DALI MCU Digital Rotary Dimmer
• Operating Voltage: 100–240V AC
• Frequency: 50/60Hz
• Power Consumption: 2.3W Max
• DALI Output Current: 100mA Max
• DALI Cable Length: Up to 300 m
• Dimming Range: 1%–100%
• Control: Rotary dimming + Push ON/OFF
• Control Type: Single Color

Protection & Operating Conditions

• IP Rating: IP20
• Protection Class: Class II
• Operating Temperature: 0°C to +50°C
• Relative Humidity: 8%–80%
• Indoor use
• Do not expose the unit to moisture

Design & Dimensions

• Housing Material: Polycarbonate
• Color: Black
• Dimensions: 80 × 80 × 53 mm
• Recessed wall-mounted design
• Rotary brightness adjustment
• Push-button ON/OFF operation

The SR-2400RB provides a practical solution for DALI lighting installations requiring straightforward manual control, combining ON/OFF switching and smooth 1%–100% dimming in one compact wall-mounted controller.