a sensor and a microprocessor are used to monitor the pH of cleaning products .the system records each reading that is taken .if the reading is greater than 7 a warning message is displayed on the monitor explain how the sensors and microprocessor are used int he system.
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The role of sensors in control. Sensors are used to measure physical quantities such as temperature, light, pressure, sound, and humidity. They send signals to the processor . ... a security alarm system may have an infrared sensor which sends a signal when the beam is broken.
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