1. Air Quality Sensors
It is made up of multiple measurements and is less concrete metric. These sensors measure the concentrations of airborne particles, CO2 and volatile organic compounds (VOC) like ammonia and methane. If the score of air in your house is low than it is healthy. To give a complete picture of your home’s atmosphere these sensors have humidity and temperature sensors also. Foobot indoor air quality monitor is the best at presenting its data.
2. Leak Sensors
After coming into contact with water these sensors activate loud sirens. The conductivity of their probes is changed when they are wet and alerts you of a leak. To measure change in conductivity some models use their legs so these should not be placed on metal surfaces. An affordable and powerful leak sensor is iHome iSB02 Dual Leak Sensor.
3. Light Sensors
They work on same principle as as that of temperature sensors. To change their conductivity based on how much light they receive photo-sensitive resistors are present. More resistance is produced by less light and vice versa. Changes in voltage are caused by the resistors that are connected to a circuit. Smart security cameras use light sensors to determine when to switch to night vision mode. Aeotec Multisensor 6 picks up on much more than light levels. Its light sensor can distinguish light levels between 0 and 30,000 lux.
4. Motion Sensors
These are the versatile type of smart sensors which work by scanning a fixed area with an infrared beam. These are an integral part of smart security systems. These devices can be placed on doors and windows to monitor your house. Adjustable range and sensitivity settings are provided in today’s model which make them more accurate. The most popular smart home ecosystems is Samsung SmartThings motion sensor.
5. Plant Sensors
Everything plants need to thrive including fertility, light, soil moisture and temperature can be measured by plant sensors. For fertility and soil moisture you have to plunge the sensors pronged bottom part into the ground. When the metal prongs come into contact with potassium and sodium ions in the soil electrical output is produced which is used to measure fertility. The amount of electricity the soil can transmit is used to determine moisture. A sprout-shaped plant sensor called Flower Power keeps tracks of fertility, humidity, light levels, outdoor temperature and soil.
