Twilight Switch FF AZ-112 PLUS 16A 230V with External Light Sensor 2–1000 lx

FF AZ-112 PLUS is a twilight (dusk-to-dawn) switch for 230V AC installations that automatically controls lighting according to ambient illuminance in the range 2–1000 lx. The device is rated for a resistive load up to 16 A and includes an external light sensor probe that enables flexible placement away from the switching unit. It is intended for outdoor and semi-outdoor applications such as street lighting, garden illumination and façade lighting where automatic on/off switching at dusk and dawn is needed.

Advantages

The Twilight Switch offers adjustable sensitivity across a wide lux range so it can be tuned for different lighting conditions and mounting locations. The external sensor probe allows the detector to be positioned where it senses ambient light accurately while the switch itself can be installed in a protected enclosure. Simple electromechanical switching provides reliable operation for resistive and many inductive loads up to the rated current. The device is compact and designed for easy integration into existing 230V circuits without requiring additional control wiring or complex configuration.

Suitable for

• Automatic control of street and pathway lighting
• Garden, yard and landscape illumination
• Façade and architectural lighting
• Outdoor security lighting and perimeter lights
• Lighting circuits where the sensor must be mounted remotely from the switch

When it may not be suitable

This twilight switch is not suitable for applications requiring dimming or gradual light level control; it provides straightforward on/off switching only. It should not be used where loads exceed the rated 16 A continuous current or where a purely electronic/solid-state switching solution is specifically required. Applications in which extreme environmental protection ratings are needed may require an additional protective enclosure for the switch unit and sensor connection.

Key specifications

• Supply voltage: 230 V AC
• Rated switching current: 16 A
• Adjustable detection range: 2–1000 lux
• External light sensor probe for remote mounting
• On/off (dusk-to-dawn) switching function
• Suitable for outdoor and façade lighting installations

How to use

Install the switch unit in a dry, accessible location within a distribution board or a suitable enclosure and connect it to the 230 V supply and the controlled lighting circuit according to the wiring instructions. Mount the external sensor probe where it receives representative ambient light (for example, away from direct lamp illumination or localized light sources) and route the sensor cable to the switch. Adjust the sensor sensitivity within the 2–1000 lx range to achieve the desired turn-on and turn-off thresholds. Verify correct operation at dusk and dawn and, if necessary, fine-tune the setting to avoid unwanted toggling from transient light sources.

What to consider before purchase

• Confirm total connected load does not exceed 16 A
• Decide sensor probe mounting location to avoid direct lamp glare or artificial light interference
• Ensure the installation location provides appropriate environmental protection or use a protective enclosure if required
• Check compatibility with the type of lamps used (some electronic ballasts or LED drivers may require specific switching devices)

Usage recommendations

For stable operation, mount the external sensor in a place representative of ambient light conditions and away from nearby lamps, reflective surfaces, or transient light sources. Periodically inspect the sensor and connections for contamination or damage and re-adjust the sensitivity after any significant change in local lighting conditions.