April 29, 2013 · 9:54 pm
Our motion detectors are really sensitive – which is a good thing. It assures you that your home is always protected. But if you are new to the system, it can be easy to trigger a false alarm. To help you avoid this, you should understand how a motion detector works. It uses passive infrared technology, which means you not only have to avoid movement while the sensor is armed but light and temperature shifts as well.
- Pet immunity The motion detector comes with pet immunity; however depending upon the size of your pet, you can increase or decrease the sensor’s sensitivity (to 33 or 55 pounds) Also make sure that when we mount the sensor, it is located so that pets can’t come within 6 feet of it by climbing on the furniture or other objects. (This makes a home with cats not a very good candidate for a motion detector)
- Bugs and insects The sensor has built in protection to prevent bugs from getting into the sensor and causing false alarms. This doesn’t stop a bug from crawling across the face of the sensor though and this can trigger an alarm.
- Reflected light Infrared energy can be reflected off any glossy surface such as mirrors, windows or floors with a glossy finish
- Windows Windows not only reflect infrared energy but they can also allow sunlight or light from cars to pass through the sensor
- HVAC Heating and air conditioning ducts should not be blowing air onto the sensor. The detector can’t see the air but it notes the change in temperature and this can cause a false alarm.
- Moving objects Anything that can sway or move because of an air current. Things like curtains, blinds, balloons, loose paper or other items that might be blown around by the heating and air conditioning ducts are an issue.
- Vibration Make sure that the sensor is mounted on a solid surface and does not vibrate. Vibration may not only cause the sensor to move a little but it can also cause the fields of view in the room to move triggering a false alarm.
These are the reasons why we will not install a motion detector in a garage!
About Burns & McBride
Our job is to provide essential services to homeowners. one of those essential services is home security and automation. We provide affordable home automation to help protect families, allow them to use energy more wisely and simplify their lives.The Burns & McBride Smart, Safe Home system uses Z-wave technology to tie things like locks, thermostats and lights together so that you can control them whether you are home or away. Burns & McBride has been providing essential home services since 1949. To learn more about Burns & McBride’s Smart, Safe Home can help you – call us at 302-656-5110 or visit our website at www.burnsandmcbride.com
February 4, 2012 · 10:00 pm
There is definitely some mystery surrounding motion sensors. They are a core element of most alarm systems and a standard feature ion our Smart, Safe Home package. So, let’s dig into what they really do.
Motion sensors detect and report motion – in most cases when nobody is home (Armed-Away). That’s why they are not “awake” when you arm your system for the night (Armed-Stay) . It’s usually not practical to put a sensor on every window, and you usually don’t need to, since you can use motion sensors and glass break detectors to get the protection you need more affordably. Plus, motion sensors have come a long way from the original models – much more reliable, and less prone to false alarms.
How do they work?
The early motion sensors were considered “active” devices, because they emitted energy (microwave or ultrasonic) to see what was happening around them. There are some still some microwave sensors being installed in commercial spaces. Today the most common motion sensor uses Passive Infra-Red energy to detect heat given off by people (and animals!) – hence the name “PIR” given to the device. The smart detectors look for objects warmer than the normal background temperature, using a special lens to create “beams” of passive energy, and then look for motion: when the sensor detects a “warm” object moving across several beams within a specified time frame – that trips the alarm.
Where do you use them?
The standard range is 30-35 feet, and the coverage area is shaped like a large water droplet, with the skinny part at the detector. The ideal spot for a motion sensor is in a high-traffic area that an intruder would cross if moving about in your home or business: think hallways, living rooms with big-screen TV, etc. The sensors work better when people move across the beams, as opposed to approaching the sensor directly. The beams project out and down, to pick up anyone trying to avoid detection by crawling.
Motion sensors and pets
Today’s sensors are usually “pet-friendly” up to 40 pounds, which means they “ignore” cats and small dogs – unless your Siamese is downright acrobatic! That means that large dogs with the run of the house all day and night make it harder to use motion sensors – unless you kennel them!
Things to Remember
Manufacturers recommend careful placement of their products to prevent false (non-intruder caused) alarms. They suggest mounting the PIDs in such a way that the PIR cannot ‘see’ out of a window. Although the wavelength of infrared radiation to which the chips are sensitive does not penetrate glass very well, a strong infrared source such as from a vehicle headlight or sunlight reflecting from a vehicle window can overload the chip with enough infrared energy to fool the electronics and cause a false alarm. A person moving on the other side of the glass however would not be ‘seen’ by the PIR.
They also recommended that the PIR not be placed in such a position that an heating and air conditioning vent would blow hot or cold air onto the surface of the plastic which covers the housing’s window. Although air emits very small amounts of infrared energy, the air blowing on the plastic window cover could change the plastic’s temperature enough to, once again, fool the electronic
Based on the latest in infrared technology, the Burns & McBride motion detector comes with three different mounting brackets and a 90° lookdown, ensuring intruders cannot pass by unnoticed. It also communicates directly with tyour Burns & McBride Go!Control panel, so if the detector is triggered, the panel will connect you to the central monitoring station in as few as 17 seconds.
Dimensions and weight
- Width: 2.5″
- Height: 3.2″
- Depth: 1.9″
- Weight (including battery and brackets): 3.7 oz. (104.9 g)
- ETL, FCC Part 15, Industry Canada
- 90° lookdown
- 110° wide-angle spread
- Three different mounting brackets
- 30’x50′ range
- 33–55 lb. pet immune
- Five-year lithium battery
- 90° lookdown: Ensure that no one can walk beneath your sensor undetected
- Tamper–proof: Know when someone is trying to tamper with your alarm
- Fully monitored: Get connected to the Burns & McBride central monitoring station in as few as 17 seconds
- Wireless signal range
- 350 ft., open air, with 2GIG Wireless Alarm Control Panel
- Transmitter Frequency
- 345.000 MHz (crystal controlled)
- Transmitter Frequency Tolerance
- ± 15 kHz
- Transmitter Bandwidth
- 24 kHz
- Modulation Type
- Amplitude Shift Keying—On/Off Keying (ASK-OOK)
- Peak Field Strength
- Typical 50,000 uV/m at 3m
- ABS plastic and poly-carbonate
- Operating temperature
- 32° to 120°F (0° to 49°C)
- Relative Humidity
- 5-95% Non-Condensing
- Unique ID Codes
- Over one (1) million different code combinations
- Supervisory Interval
- 70 minutes
Included equipment and accessories
- Battery (installed)
- Two (2) Panasonic CR2032, or equivalent Lithium batteries
- Included Accessories
- Mounting brackets, two (2) long Phillip’s head screws, two (2) plastic wall anchors, magnet
For more information on this exciting product call us at 302-656-5110 or visit our website at http://www.burnsandmcbride. Finally you might want to follow our blog at http://www.burnsandmcbrideblog.com. Just as Smartphones are adding applications and changing every day so to with the technology behind our Smart, Safe home system. Our blog explains some of the constantly changing things that are happening in the industry and we hope that you find it informative.
Filed under Home Safety, Home Security, Home Security 101, How Things Work, Uncategorized
Tagged as 2gig, burglar alarm, home security, interactive security, motion detector, pir, safe home