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The ionization sensors are used to detect the small particles from fast burning fires, but because of their nature, they’re more prone to false alarms these type of sensors are usually found built into older smoke detectors. The photoelectric sensors can detect larger particles, so it is a lot more useful for smouldering fires those which have not yet erupted into flames, so they’re better for an early detection and are less likely to trigger false alarms. The First Alert P1010 uses the aforementioned technology, so it has a beam of light inside a small chamber which does not directly hit the photoelectric sensor, but, the moment smoke particles enter the device through the holes in the metallic section, the light gets diverted and it will immediately hit the sensor, thus sounding the alarm. In case a fire is detected, you will be able to hear three beeps, pause, three beeps, pause and repeat, while the LED light will flash rapidly – the LED is located inside the Silence / Test button the horn is loud, reaching up to 85 db, 10 feet away from the device – if you have a hearing impairment, it is advisable to have a look at smoke alarms with built in strobes. 1. Which type of sensors are equipped on the smoke detectors?Smoke detectors can have two types of sensors: ionization sensors, photoelectric sensors or both usually called dual sensors. The ionization sensor is used to sense flashing fires by detecting the small particles generated by these fast burning fires and triggering the alarm. The technology behind it involves using a radioactive isotope of americium usually, it’s Americium 241 to ionize the air inside a chamber and, if the sensor detects any changes in the air, it triggers the alarm. The disadvantage of using such type of detectors is that they are more prone to false alarms such as when you’re cooking or when there’s a large amount of steam. The photoelectric sensor is more sensitive to larger particles which are specific to slow burning, smouldering fires which could originate from a forgotten cigarette on the couch, but the sensor is not as sensitive to flaming fires. The way this type of detector works is that it uses a light source can be infrared, ultraviolet or visible which points away from the sensor, but, in the event of smoke entering the small chamber, the light particles will be scattered, therefore, some will hit the sensor and trigger the alarm.

Posted March, 2011 by Admin

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home security systems reviews

However, those options tend to decrease significantly when you’re opting for outdoor home security cameras, such as your front porch, backyard, and even driveway. Be sure to check for outdoor ratings on home security cameras if you are looking to install outside; these need to be rugged enough to withstand weather wind, snow, rain, sun, seasonal temperature changes which can be severe, depending on your climate, humidity, and more. Similar to the motion sensor lights that became popular and more common decades ago, home security cameras on today’s market often contain the feature of motion detection. When movement is detected, you will receive notification to alert you of suspicious activity, which allows you to more closely monitor the situation remotely. However, some home security cameras can differentiate between what or who is being targeted for activity – an animal, a car, or a person. Even still, some super smart home security cameras are delving into face recognition technology, involving an automatic zoom in on the people within the field of view and a notification of recognition or unrecognition sent.

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Wi Fi Wireless Network ConnectivityCan be Hard Wired and Mounted, LAN Ethernet CableAuto Record Schedule Timer: Video Recording While AwayMicro SD Card Slot: Easy File Saving, Sharing and TransferAdjustable Camera Lens Rotation Axis Night Vision Low Light IlluminationMotion Detector Recording FunctionLightweight and Compact DesignLED Indicator Status LightsImage Adjustment Configuration OptionsPerfect for Home, Office or Business UseThe 'SereneViewer' App:Monitor and Survey While AwayWireless Video Recording ControlRemote PTZ Pan / Tilt / Zoom ControlsAbility to Monitor the Location via SmartphoneHassle Free Access: Multiple Users can Login and ViewButton Activated Schedule, Stop and StartReal Time App Push Notification AlertsAvailable for Android and Apple iOSFree to DownloadWhat's in the Box:IP Wi Fi CamQuick Start GuideNetwork Ethernet Cable, 3.

99View at Amazon$249View at WalmartSee all prices 28 found?These days, Nest is part of Google, and the company has expanded into home security with Nest Secure.

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Posted February, 2011 by Admin

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