Hi-Link HLK-20M05 5V 20W AC-DC Power Converter (AC to DC Switch Power Supply Module) Temp Humidity & Gas Sensor Temperature

Temperature

Problems are indicated via an easy-to-read LED display

This is a basic 16A 250V DPDT ON-ON Rocker Switch with Indicator Light perfect for controlling power to electronic circuits

an ADC with high resolution or an instrumentation amplifier is necessary

PC817 Photocoupler IC has a transistor that is controlled based on light (photon)

Hi-Link HLK-20M05 5V 20W AC-DC Power Converter (AC to DC Switch Power Supply Module) Temp Humidity & Gas Sensor TemperatureThe HLK 20M05 5V 20W Switch Power Supply Module is a PCB mounted isolated switching step down power supply module with a plastic enclosure. It has a power rating of 20 Watt and can supply 5V DC from 100V AC to 240V AC. This makes it ideal for small circuits that require a 5 volts power supply. These modules have a number of advantages, including low temperature increase, low power, high efficiency, high reliability, high security isolation, and so on