Dusk Switch Steinel NM 3000 0.5–10 Lux — Steinel NM 3000 twilight sensor switch

Steinel NM 3000 is a dusk (twilight) switch that measures ambient light and automatically switches lighting on or off according to a user-adjustable threshold between 0.5 and 10 lux. Designed for straightforward integration with lighting circuits, the NM 3000 activates lights at dusk and deactivates them at dawn or when ambient illumination rises above the set level. The compact housing and clear adjustment make it suitable for both outdoor and indoor installations where automatic control of illumination is required.

Advantages

The adjustable sensitivity from 0.5 to 10 lux provides precise control over the switching point, allowing adaptation to different installation heights and local light conditions. The device reduces manual intervention and helps optimize energy consumption by ensuring lights operate only when needed. Robust design and straightforward electrical connection enable reliable operation in typical lighting control applications without complex programming.

Suitable for

• Outdoor façade, garden and pathway lighting
• Entrance lighting and stairwells
• Basement and garage lighting requiring automatic control
• Indoor spaces where lights should follow natural light levels

Key specifications

• Light threshold adjustable from 0.5 to 10 lux
• Type: dusk (twilight) sensor switch for automatic on/off control
• Compact housing suitable for wall or fixture mounting
• Designed for outdoor and indoor use in standard lighting circuits

How to use

Mount the Steinel NM 3000 in a location representative of the ambient light level to be monitored, away from direct artificial light sources that could cause false switching. Connect the switch into the lighting circuit following applicable wiring regulations and the manufacturer's installation instructions. Adjust the lux threshold using the control so that lights activate and deactivate at the desired brightness. After installation, test operation at dusk or by temporarily shading the sensor to confirm correct switching behavior.

Recommendations

Position the sensor where it receives natural ambient light but is not directly illuminated by the controlled light fixture. For reliable operation, avoid mounting near heat sources or reflective surfaces that may alter measured light levels. Where precise timing or integration with other control systems is required, consider combining the twilight switch with additional control devices or timers.