A guide on home security sensors

Home Security sensors are technological marvels. They have a wide range of applications, and they are indispensable for modern security systems.

Having home security system installation in Utah includes different kinds of sensors such as motion sensors, window sensors, smoke detectors, etc. This piece is for our more curious readers. In this blog, we will see just how these devices work.

Motion sensors

You can place motion sensors at different locations in your home. Motion sensors work using different principles to detect objects, humans, pets, and motion. Infrared motion sensors detect heat (in the form of infrared radiation) from warm objects such as humans and pets. Unlike some other forms of motion sensors, infrared sensors can’t work through walls.

Ultrasound motion sensors blast a continuous beam of ultrasonic waves to detect objects. The frequency is beyond the limit of human hearing meaning they are non-intrusive. Ultrasound sensors come with a receiver and a transmitter that sends out the waves.

The waves reflect off objects and potential intruders. When there is a disturbance in the sound wave field, the sensor picks it up.

Microwave sensors work in a similar way to ultrasound sensors but instead, it uses radio waves. Microwave sensors come with the advantage that they can detect objects through walls. This means they provide better coverage at homes.

Microphone sensors

Windows and glass break sensors use microphones to detect a break-in. When glass shatters, it produces a sound within a specific frequency range. They are a common component of residential burglar alarm systems in Utah. Microphone sensors pick up on this sound, communicate with the home’s smart system, and raise the alarm. Other forms of glass sensors that don’t use sound waves sense vibrations on the glass membrane. – When an object hits the glass, or it breaks, the shock produces vibration which the sensors pick up.

Smoke and CO sensors

Sometimes, humans are not the enemy. Home security systems in Utah feature smoke, CO, and flood sensors to provide a more robust coverage.

Smoke sensors use two technologies to check for carbon particles. The first type works with the photoelectric effect. This type of sensor projects light through a small chamber, with a light-sensitive sensor. During normal conditions, the light doesn’t impinge on the sensor. The smoke from a fire fills up the chamber, and the light reflects off the gas and impacts the light detector. When this occurs sufficiently, the smoke detector raises the alarm

The other kind of smoke detector employs ionization to detect smoke and carbon monoxide. The device houses two radioactive plates that charge or ionize air molecules, and electricity passes through this ionized chamber. You should know that the harmless radiation doesn’t pass through the smoke detector.

As smoke enters the chamber, the smoke particles attract the ions and decrease the voltage in the chamber. When the loss of voltage reaches a certain level, the smoke detector raises an alarm. Both types of smoke detectors are effective in different conditions.

CO detectors

Carbon monoxide is nigh impossible for most people to detect. It is colorless, odorless, and does irreversible damage to the body. Detectors use several methods to gauge CO levels in the air. Some CO detectors use electrochemical sensors. It consists of a setup with metals in an electrolyte. When carbon monoxide gas enters the chamber, it chemically interacts with the electrolyte and reduces its conductivity. The extent to which the conductivity reduces determines the amount of CO in the air.

Detectors with metal oxide detectors work on a similar principle. CO gas reduces the conductivity of the metal oxide plates, and the sensor raises the alarm. Newer or more innovative manufacturers fashion their sensors to detect CO in a similar way to hemoglobin. This new form uses a gel that changes color when it absorbs monoxide gas. A light sensor detects the color change, and it sounds the alarm.

Flood detectors.

Flood detectors work to detect leakages, and they can help save you thousands of dollars in damage repairs. They are good in places meant to be dry such as your basement. You can also use them in bathrooms, kitchens, and other appliances to detect peaks in pipes.

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