The LMLS-400 is a closed loop photosensor that measures the ambient light level in order to automatically switch or dim one zone of lighting. It is part of a Digital Lighting Management (DLM) system and sends light level signals to control loads connected to DLM on/off or dimming room controllers. The LMLS-400 has a photodiode with an extended range of 1-1;553 footcandles (fc); and photopic correction to mimic the human eye; for precise measurement of visible light.

• Daylight responsive on/off; bi-level; tri-level or dimming control for one lighting zone
• Extended tube model accommodates thicker ceiling materials
• 100 degree spatial response for optimal detection of ambient light level
• Automatic calibration and configuration; optional hold off setting to maximize energy savings
• Photodiode corrected to match the photopic response of the human eye
• Can be calibrated in any daylight condition
• Input voltage: 24VDC from DLM local network
• Current consumption: 7mA
• DLM local network connection: 1 RJ45 port
• Digital multi-band photodiode with extended range: 1–1;553 fc (10–16;716 lux)
• Spatial response: 100 degrees