Sensor

This is a multipurpose sound sensor which can be used to sense sound and audio. The sensor provides a digital ouput when the measured sound increases

Sound & Audio Detection Sensor for Arduino & Raspberry Pi

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Best Non contact infrared temperature sensor for industrial - Renke

Inductive Sensors

Soil 7 in 1 Sensor Modbus RS485 5V JXCT – RoboticsDNA

Safe sensor technology for industry - Pilz IN

Tactile sensor - Wikipedia

Synthetic Sensors Is a Sensor That Could Soon Make Homes Scary-Smart

Photoelectric Sensors