Light Level Sensors

The external light level sensors return a linear 0-10vDC signal representing the Lux level at the photo-diode cell based on the selectable Lux levels. The sensors are typically used to monitor external lighting levels to optimise energy efficiency through dimming and/or disabling lights as required. The LL-E-V is an external light level sensor with three different output ranges which can be selected using a link on the PCB. Selectable ranges are 10-2,000 and 10-10,000 Lux. The LL-E-V has two screw fixing holes for easy mounting and is IP65 rated when the snap shut lid is screwed down. Power supply is 24vAC/DC.

These light level sensors return a linear 0-10vDC signal representing the Lux level at the photo-diode cell. The sensors are typically used in lighting strategies to optimise energy efficiency through dimming and/or disabling of lights as required or as sensors to monitor light levels over a period of time. The LL-C-V is an internal ceiling mounted light sensor and LL-W-V is an internal wall mounted light sensor. Both units have a fixed range of 10-2,000 Lux and operate from a 24vDC power supply.

The LL-C-M is a combined light level and occupancy sensor that can be used to control building lights based on occupancy and an adjustable light level. A passive Infra-red detector monitors occupation through moving body heat and a photo-sensitive device monitors the light levels. The sensors are typically used in lighting strategies to optimise energy efficiency through controlling lights. The sensor is an internal ceiling mounted sensor with adjustable light level switching and an adjustable off delay time. Units are 230vAC powered and can provide up to 8A capacity on the switching relay.