Royce Thompson Electric Lighting Controller Detector, Cadmium Sulfide, Wall Mount, 230 V
Technical Document
Specifications
Controller Type
Detector
Sensor Type
Cadmium Sulfide
Voltage Rating
230 V
Mount Type
Wall
Range
Adjustable
Time Delay
10 s to 40 s
Length
95 mm
Width
70 mm
Height
51.5mm
Wattage
250 mW
Country of Origin
United Kingdom
Product details
Adjustable 5-1000 Lux
Suitable for internal and external use
Time delay prevents intermittent switching
LED indication of unit operation
Adjustment by potentiometer
Daylight Lighting Controllers
These controllers automatically turn lights 'ON' and 'OFF' in response to changes in ambient light levels, primarily the transition from day to night and vice-versa. The more advanced types (see note below) have inbuilt logic to minimise false triggering, whereas the remainder have inbuilt time delays or higher 'OFF' thresholds, to prevent on/off cycling. As a general rule, these controllers should be sited such that they are not illuminated, by the light they are controlling. Nominal supply voltage is 230Vac.,Note regarding energy-saving negative-hysteresis controllers,Where figures for the 'OFF' threshold are lower than for the 'ON' threshold, the sensor is designed such that four thresholds are actually monitored. These are: dusk, the middle of the night, dawn and the middle of the day. Monitoring at times other than dusk and dawn enables the sensor to determine what it should be looking for next, minimising false triggering and improving overall controller operation.
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Technical Document
Specifications
Controller Type
Detector
Sensor Type
Cadmium Sulfide
Voltage Rating
230 V
Mount Type
Wall
Range
Adjustable
Time Delay
10 s to 40 s
Length
95 mm
Width
70 mm
Height
51.5mm
Wattage
250 mW
Country of Origin
United Kingdom
Product details
Adjustable 5-1000 Lux
Suitable for internal and external use
Time delay prevents intermittent switching
LED indication of unit operation
Adjustment by potentiometer
Daylight Lighting Controllers
These controllers automatically turn lights 'ON' and 'OFF' in response to changes in ambient light levels, primarily the transition from day to night and vice-versa. The more advanced types (see note below) have inbuilt logic to minimise false triggering, whereas the remainder have inbuilt time delays or higher 'OFF' thresholds, to prevent on/off cycling. As a general rule, these controllers should be sited such that they are not illuminated, by the light they are controlling. Nominal supply voltage is 230Vac.,Note regarding energy-saving negative-hysteresis controllers,Where figures for the 'OFF' threshold are lower than for the 'ON' threshold, the sensor is designed such that four thresholds are actually monitored. These are: dusk, the middle of the night, dawn and the middle of the day. Monitoring at times other than dusk and dawn enables the sensor to determine what it should be looking for next, minimising false triggering and improving overall controller operation.