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Internal Light Level & Occupancy Sensors

Internal Light Level & Occupancy Sensors

Quick Overview

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.
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  • Combined light level and occupancy sensor
  • 10-2,000 Lux range
  • Adjustable off delay timer
  • Switching light level fully adjustable
  • Flush ceiling mounted
  • 230vAC @ 50Hz power supply
  • Switching relay output (Max 8A)


Light Level Sensor: Photo-sensitive device
Occupancy Sensor: Passive Infra-red detector
Light Range: 10-2,000 Lux
Switching Capacity: Incandescent - 8A, Fluorescent - 6A
Off Delay Timer: 10 secs to 30 min
Power Supply: 230vAC @ 50 Hz
Installation: Ceiling mounted
Operating Conditions: -10 to +40°C, 90%RH non-condensing
Housing Material: Flame Retardant ABS, Polypropylene
IP Rating: IP30

The switching point and time delay are set by concealed adjustment potentiometers behind the lens bezel. In normal operation, the lights will only be switched on when the room is occupied and the light levels are below the desired level. Note, when the LUX control is at maximum the lights will always come on with occupancy.

Availability: Stock Item


Components / Downloads

For further information, technical advice, or a quotation please call or email us. If you are not sure which product you need one of our technical sales advisors will be happy to discuss your application. We also accept company purchase orders by fax or post. Credit card orders can also be placed over the phone for any product.

Internal flush ceiling mounted combined light level and occupancy sensor with adjustable switching and off delay time. Adjustable switching point between 10-2,000 Lux and off delay between 10 secs and 30 minutes. Housing: Material flame retardant ABS, polypropylene, IP30. Ambient range: Temp. -10 to +40°C, 90% RH non-condensing. Power supply 230vAC and max 8A switching capacity.
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