PH Sensor Module with PH Probe - Water Quality Monitoring Sensor [C] Audio Amplifier This will come handy if

This will come handy if your machinery falls like bike crash and other accidents as it will turn off the electrical supply and thereby minimising the risk of fire by short circuiting

Connect the base terminal of the transistor to the 5V GPIO pin of the controller or V supply line of the Digital Circuit but care should be taken as it will need 120mA of base current if you are operating in high gain region

The camera features a 1

Drones etc where high current is involved

The Ultrasonic Sensor uses Ultrasonic waves to determine the distance of an object like Bats

PH Sensor Module with PH Probe - Water Quality Monitoring Sensor [C] Audio Amplifier This will come handy ifThe PH Sensor Module with PH Probe is a reliable and easy to use solution for measuring the acidity or alkalinity of liquids. The kit includes a high sensitivity pH probe and a signal conditioning module that outputs analog signals, making it suitable for DIY projects, aquariums, hydroponics, laboratory use, and industrial applications. Features: Measures pH levels accurately in the range of 0 to 14. Comes with a high quality pH glass electrode probe.