For security, there are many devices out in the market with most of the home automation protocols. Let's first look at door/window sensors and motion sensors. There are door/window sensors with almost all of the home automation protocols. For example, we have the Philio multi-sensor device, which includes a door/window sensor with a magnetic piece to detect whether the door or window is open or closed. You can find the door/window sensor sold separately with your selected home automation protocol to add to your home automation system.

The following image shows the Z-Wave Philio multi-sensor. It is for when door or a window is open. In a home automation system, you can get multiple door/window sensors in your home and can customize the names of the sensors to understand which room's door or window is open at a given time.

As shown in the preceding image, on the Philio multi-sensor device, you will also see a motion sensor at the head of the bigger part of the device. Motion sensors can also be used separately and you can place them in various places to detect motion.

Besides the door/window and motion detectors, you can also find door locks, that replace classical door locks. These locks allow you to remotely monitor and control the lock system. For example, you can connect to your home automation system remotely to check if the door is locked and, if it's not, you can lock it remotely.

Preventing dangerous events from occurring or being notified when they are happening is key to securing your home. Smoke and flood detectors will help you to do that. There are many smoke detectors with every home automation protocol for fire detection. When you include a smoke detector in your home automation system, the home automation system can automatically switch the wall plugs off immediately to prevent fire damage to electricity outlets. Any other action can be defined according to the home automation system's capabilities.

There are also flood detectors available to alarm systems to detect any water leakage in the residential area. These can be placed onto your kitchen floor or anywhere in the residential area, that is ideally supposed to be dry. Flood detectors are useful when there is a broken pipe that leaks water or an amount of water has somehow entered an area that should be dry. Flood detectors might not help much during sudden natural disasters but will help you to detect water in normal situations.

In the following sections, we will use a Z-Wave flood detector and include it into our Smart Home application. We will use a flood detector (as shown in the following image) produced by Everspring. In the application, we will get the sensor status and take action according to it. We will make a test to close the lamp holder and wall plug if flood is detected by the sensor.

Let's start by adding new features to our Smart Home application that we have started in the previous chapters.