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We have over 30 years experience in electrical contracting. We electrical installation and repairs to domestic and commercial installations.

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Winerys & Cellar Door, new and upgrades.
 

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Energy Management.

The use of sensors can save you energy by only having lights and appliances ON when the room or area is in use. The selection of sensors can make life a bit easier as each type has different options.

Passive Infrared Occupancy Detection:

All Sensor Switch sensors utilize Passive Infrared (PIR) technology to detect changes in the infrared energy given off by occupants as they move within a sensor’s field-of-view. This type of sensor will turn OFF after the timer period if there is no sign of movement in its field of view yet they are a good choice for hallways or where there will be movement during the timed period.

Microphonics™ Occupancy Detection:

Microphonics™ technology uses a microphone inside the sensor in order to “hear” sounds indicating occupancy in rooms with obstructions, such as bathrooms with stalls or open office cubicle areas. By using Automatic Gain Control (AGC), the sensor can dynamically self-adapt to its environment by filtering out constant background noise and detecting only leading edge noises typical of human activity. Microphonics is only used in Dual Technology sensors where it is paired with PIR (see next paragraph).

Microphonics is not used by itself in sensors.

Dual Technology (PIR + Microphonics):

Sensor Switch’s Passive Dual Technology (PDT) combines both of these detection technologies. It requires sensors to first “see” motion using Passive Infrared and then engages the Microphonics™ to “hear” sounds that indicate continued occupancy. For example, when an occupant enters a room the PIR detection signals the sensor to turn the lights on. Now that the PIR has been initially triggered, either another PIR detection or a Microphonics detection can keep the lights on. Patented by Sensor Switch, Passive Dual Technology using PIR and Microphonics provides a more reliable and completely passive alternative to active ultrasonic methods of detection.

Comparison vs. Ultrasonic Technology False Tripping:

False tripping occurs when a sensor turns on the lights when no occupant is actually present. False tripping causes increased lighting run-time (therefore less energy savings) and also increases the number of lamp cycles which in turn can lead to decreased lamp life. Sensors that use Ultrasonic technology can not distinguish between occupant and non-human motion therefore they can be prone to false tripping from air currents, hanging mobiles, or other building-type movements. An example of this type of situation is where Ultrasonic sensors turn on a building’s lights regularly during the night whenever the air conditioning system kicks on. This and other similar occurrences have been observed in the field and are an example why Ultrasonic technology is not used in security sensors.