Ambient light sensor bleBox TWILIGHT-SWITCH/BLEBOX — 12–24 V DC input for LED lighting control

bleBox TWILIGHT-SWITCH is an ambient light (twilight) sensor designed to control LED lighting automatically based on measured illumination. The device accepts a 12–24 V DC supply and monitors light levels in lux to switch lighting circuits on or off when predefined thresholds are crossed. It is intended for indoor locations and sheltered outdoor installations where reliable dusk-to-dawn or low-light control of LED fixtures is required.

Advantages

The twilight sensor provides automatic, threshold-based switching that reduces manual intervention and improves energy efficiency by ensuring LED lighting is active only when needed. Its 12–24 V DC input makes it compatible with common low-voltage LED power supplies, and the unit is suitable for mounting in protected outdoor spots or inside technical rooms. The device supports consistent, repeatable operation by applying measured lux values to trigger outputs without requiring complex configuration.

Suitable for

• Automatic switching of garden and pathway LED lighting
• Facade and architectural accent lighting control
• Street or driveway lighting in sheltered areas
• Indoor installations requiring dusk/dawn automation

Key specifications

• Operating voltage: 12–24 V DC input range
• Function: ambient light (twilight) sensing with threshold-based switching
• Application: control of LED lighting circuits
• Suitable mounting: indoor and sheltered outdoor locations
• Sensing parameter: illumination measured in lux

How to use

Install the sensor in a location representative of the ambient light affecting the controlled luminaires, avoiding direct artificial light sources that could skew readings. Connect the device to a compatible 12–24 V DC power supply and wire the output to the LED driver or switching input according to the installation manual. Set the desired lux threshold so the switch activates the lighting when ambient illumination falls below the selected value and deactivates when it rises above it. Verify operation at dusk and dawn and adjust the threshold or mounting position if needed to achieve the preferred switching behavior.

Usage recommendations

For reliable operation, mount the sensor where it senses natural ambient light rather than direct lamp output; protect the unit from heavy rain and extreme exposure. Use a stable 12–24 V DC supply and verify compatibility with the LED drivers or switching devices used. Periodically inspect the sensor window for dirt or obstructions that could affect lux measurement and recalibrate or adjust placement if switching becomes inconsistent.