A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact. A proximity sensor often emits an electromagnetic field or a beam of electromagnetic radiation (infrared, for instance), and looks for changes in the return signal. The object being sensed is often referred to as the proximity sensor’s target.     Different proximity sensor targets demand different sensors. The different types of proximity sensors are: Inductive, Capacitive, Ultrasonic, … Continue reading IoT Devices – Proximity Sensors »