item specification -- distance: 2~12 meters (adjustable); detection angle: ≤160°; time-delay: 5sec~10min(adjustable); recommended installation height: 1.5~4m. wire connection instruction: brown wire: live input, red wire: live output, blue wire: common neutral.

PIR-based motion detector edit A PIR motion detector used to control an outdoor, automatic light. A camera trap with PIR motion detector. An indoor light switch equipped with PIR-based occupancy sensor [1] PIRs come in many configurations for a wide variety of applications. The most common models have numerous Fresnel lenses or mirror segments, an effective range of about 10 meters (30 feet), and a field of view less than 180°. Models with wider fields of view, including 360°, are available, typically designed to mount on a ceiling. Some larger PIRs are made with single segment mirrors and can sense changes in infrared energy over 30 meters (100 feet) from the PIR. There are also PIRs designed with reversible orientation mirrors which allow either broad coverage (110° wide) or very narrow "curtain" coverage, or with individually selectable segments to "shape" the coverage. The qwyeuro advantage:high-quality switches specially designed for the home, the lights come on when people come, and the lights go off when people walk off, reducing energy waste Time-delay is added continually: when it receives the second induction signals after the first induction, it will compute time once more on the rest of the first time-delay basic (set time). time-delay adjustment: it can be set according to the consumer’s desire. the minimum time is 10sec±3sec. the maximum is 7min±2min. Infrared motion sensors are typically straightforward to install. Before installation, however, it is important to familiarise yourself with the particular sensor's range. This will help you to plan an effective coverage system and ensure the entire area that needs covering will be monitored.

How do PIR Sensors Work?

A PIR-based motion detector is used to sense movement of people, animals, or other objects. They are commonly used in burglar alarms and automatically activated lighting systems. Can identify day and night: the consumer can adjust work ambient light. it can work in the daytime and at night when it is adjusted on the “sun” position (max). it can work in the ambient light less than 10lux when it is adjusted on the “moon” position (min). as for the adjustment pattern, please refer to the testing pattern. Many false alarms will be caused by the placement of the alarm and sensors rather than the cost or quality of the alarm. This means that when installing wireless motion detector alarms, you should arrange them in places that maximise their efficiency while minimising false warnings. Sensors are also often designed to "ignore" domestic pets, such as dogs or cats, by setting a higher sensitivity threshold, or by ensuring that the floor of the room remains out of focus. motion sensor outdoor -- the pir sensor adopts infrared body motion induction technology, which can achieve intelligent control and energy saving. recommended that the product is installed by professional electrician.

Common installation locations include ceiling or wall mounting as these tend to provide a clear, unimpeded view of the detection area. They may also be installed alongside wall lights, for example, in automatic lighting applications. The PIR sensor is typically mounted on a printed circuit board containing the necessary electronics required to interpret the signals from the sensor itself. The complete assembly is usually contained within a housing, mounted in a location where the sensor can cover the area to be monitored.

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Time-delay is sens adjustable: it can be adjusted according to using location; low sensitivity with 2m for detection distance; high sensitivity with 12m, it fits for large room.continually: when it receives the second induction signals after the first induction, it will compute time once more on the rest of the first time-delay basic (set time). PIR sensor-based alarms can be designed to ignore certain shapes of moving objects, or only detect motion above a certain height. This makes them suitable for households that have pets, allowing you to set the alarm before leaving the house in the day without worrying that it will be triggered by your cat or dog moving about. The housing will usually have a plastic "window" through which the infrared energy can enter. Despite often being only translucent to visible light, infrared energy is able to reach the sensor through the window because the plastic used is transparent to infrared radiation. The plastic window reduces the chance of foreign objects (dust, insects, rain, etc.) from obscuring the sensor's field of view, damaging the mechanism, and/or causing false alarms. The window may be used as a filter, to limit the wavelengths to 8-14 micrometres, which is closest to the infrared radiation emitted by humans. It may also serve as a focusing mechanism; see below. PIR sensors are great at determining if you have an intruder or it’s just an animal, for example. They have a better accuracy level and can reduce false alarms overall. However, you should pay attention to some small details to further reduce the risk of false alarms from your PIR motion sensors. Manufacturers recommend careful placement of their products to prevent false alarms (i.e., any detection not caused by an intruder).

Once the PIR sensor detects movement an alert is sent to the alarm panel which activates the alarm. It is critical to completely enclose the PIR sensor itself with a material that can reduce the effects of external temperature and humidity, such as metals like silicon. The benefits of PIR Simple things like air blowing in close proximity or a rodent moving across the floor can still set off your alarm.

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Avoid installing sensors near radiators and air vents, for example, as temperature changes could impact reliability or result in a false alarm

A passive infrared sensor detects the infrared light emitted by a warm object using passive infrared technology. All objects with a temperature above absolute zero emit heat energy in the form of electromagnetic radiation. Usually this radiation isn't visible to the human eye because it radiates at infrared wavelengths, but it can be detected by electronic devices designed for such a purpose. Radiation is produced by all objects that have a temperature greater than absolute zero. This energy is expressed in the form of heat energy. Because heat radiates as infrared wavelengths, much of this radiation is not visible to the human eye, however it can be detected by electronic instruments that have been specifically constructed for this purpose.PIR sensors, at their most fundamental level, work by detecting positive differential change. Two infrared-sensitive slots are located in front of the lens, and the range of detection is determined by the slots’ field of “vision”. While both slots are ‘idle’, the ambient amount of infrared sensed in the room (which is naturally emitted by all items) is the same on both slots while they are ‘active’. When an object, person, or animal moves through the detecting region, it is sensed by one of the slots before the other, creating a positive differential change as it passes through and a negative differential change as it exits. Designs have been implemented in which a PIR circuit measures the temperature of a remote object. [6] In such a circuit, a non-differential PIR output is used. The output signal is evaluated according to a calibration for the IR spectrum of a specific type of matter to be observed. By this means, relatively accurate and precise temperature measurements may be obtained remotely. Without calibration to the type of material being observed, a PIR thermometer device is able to measure changes in IR emission which correspond directly to temperature changes, but the actual temperature values cannot be calculated. These differentials are what the PIR sensor uses to detect movement, sending a message to the alarm panel and sounders if active. It is important to seal the PIR sensor itself inside material that can reduce the outside influences of temperature or humidity, such as metals like silicon. Pet-Friendly PIR Sensors It is also recommended that the PIR not be placed in such a position that an HVAC vent would blow hot or cold air onto the surface of the plastic which covers the housing's window. Although air has very low emissivity (emits very small amounts of infrared energy), the air blowing on the plastic window cover could change the plastic's temperature enough to trigger a false alarm.