Lighting Styles

www.lightingstyles.co.uk
01780 767 617

PIR and Occupancy Sensors

Lighting Styles offer several PIR occupancy detectors that can be used switch on lighting circuits ensuring safety and energy saving. Using a remote PIR sensor does mean that all lights can be switched on at the same time rather than waiting for individual lights to be switched as you move into the path of each sensor.

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Items 1 to 16 of 16.
Indoor & Outdoor Stand-Alone PIR Sensor - 180° IP44 Rated Motion DetectorIndoor & Outdoor Stand-Alone PIR Sensor - 180° IP44 Rated Motion Detector

Indoor & Outdoor Stand-Alone PIR Sensor - 180° IP44 Rated Motion Detector

2 Options
£16.50
Optimised PIR Motion Sensor for Lighting - No Minimum Load, IP44
Simple Dusk-to-Dawn Photocell Switch - Discreet Contemporary DesignSimple Dusk-to-Dawn Photocell Switch - Discreet Contemporary Design

Simple Dusk-to-Dawn Photocell Switch - Discreet Contemporary Design

2 Options
£16.90
White or Black to Blend in with Wall Colour
PIR Switch Plate - Replaces Standard Wall Light SwitchPIR Switch Plate - Replaces Standard Wall Light Switch

PIR Switch Plate - Replaces Standard Wall Light Switch

 
£19.40
Automate your Lighting to Save Energy - With Override
Surface Mounted 360° PIR Movement SensorSurface Mounted 360° PIR Movement Sensor

Surface Mounted 360° PIR Movement Sensor

 
£21.40
Reduce Operating Costs - Automate Your Lighting
Dusk to Dawn Switch with Countdown TimerDusk to Dawn Switch with Countdown Timer

Dusk to Dawn Switch with Countdown Timer

 
£29.60
Operates Lights at Night For a Timed Period
Daylight & Motion Smart Sensor - Bathrooms or OutdoorDaylight & Motion Smart Sensor - Bathrooms or Outdoor

Daylight & Motion Smart Sensor - Bathrooms or Outdoor

2 Options
£29.95
Easy Installation Without Cables - Bracket Included
PIR Sensor - Replaces Wall SwitchPIR Sensor - Replaces Wall Switch

PIR Sensor - Replaces Wall Switch

2 Options
£35.70
Operates Fans, Lighting Circuits or Both
Photoelectric Switch With Timer - Operates Lights When it Gets Dark Photoelectric Switch With Timer - Operates Lights When it Gets Dark

Photoelectric Switch With Timer - Operates Lights When it Gets Dark

 
£36.80
Saves Electricity - You Can Set the Period the Lights Are On
Recessed Mini PIR Ceiling Sensor With Power ModuleRecessed Mini PIR Ceiling Sensor With Power Module

Recessed Mini PIR Ceiling Sensor With Power Module

 
£48.15
Can Switch Loads up to 2000w Lighting or Whatever you Require on a Sensor
Recessed Compact Movement Detecting Microwave Sensor 360 DegreesRecessed Compact Movement Detecting Microwave Sensor 360 Degrees

Recessed Compact Movement Detecting Microwave Sensor 360 Degrees

 
£56.75
Useful in Area of Your Home Without Natural Light
Items 1 to 16 of 16.

Introduction to PIR & Occupancy Sensors

All lighting systems are operated with lighting controls i.e. devices that switch lights on and off or devices that dim light output. The most common and basic lighting control is a simple on-off switch, which, when flipped, opens and closes the lighting circuit and switching on or off the lamps.

While the basic switch is economical in terms of initial cost, they can actually become quite expensive over time in terms of total ownership cost. A solution is the adoption of automatic lighting controls that switch the lights based on occupancy. Occupancy sensors are automatic switching devices that sense human occupancy and control the lighting system accordingly by turning on the lighting system.

If we reduce the hours of operation for a lighting system, then we can significantly reduce energy use and associated costs. By turning off the lights when occupants are not present using occupancy sensors, we reduce energy waste that can result in a reduction in lighting energy consumption and savings of 35% to 45% are typical.

In an occupancy or PIR -based motion detector, the PIR sensor is typically mounted on a printed circuit board which also contains the necessary electronics required to interpret the signals from the chip. The sensor is mounted in a location where it can view the area to be monitored. Infrared energy is able to reach the sensor through the opaque window because the plastic used is transparent to infrared radiation. This plastic sheet or bubble prevents the introduction of dust which could obscure the sensor`s field of view.

A person entering the monitored area is detected when the infrared energy emitted from the person`s body is focused by a lens or a mirror segment and overlaps a section on the chip which had previously been looking at some much cooler part of the protected area. As the person moves, so does the hot spot on the surface of the chip - moving hot spots cause the electronics connected to the chip to de-energize the relay, operating its contacts and illuminating the lamp circuit.

Relays can be incorporated in the lighting circuit to have more than one detector operating the same lights i.e. both end of a corridor or to switch between dimmed lighting when areas are unoccupied and full output when movement is detected. A good electrician should be able to advise you on what relay would be required to suit your conditions and use.