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It has Four lead wires which can be connected to HX711 A/D Pressure Sensor
9V Battery Adapter for the Arduino attaches to a 9V Battery and the other side attached to arduino through barrel connector
voltage in:3 - 5 v
When it comes to measuring the gas in ppm the analog pin has to be used
Water Level Switch Digital Temperature Sensor It has Four lead wiresIntroduction: The switch has the advantages of high sensitivity and durability. PP material is environmentally friendly and has excellent acid and alkali resistance. The switch has the advantages of light weight, simple working principle and low price. The product is widely used in various liquid level control applications, and can be used in water dispensers, water heaters, humidifiers, bathroom equipment. Features: Cable length: 40cm Maximum load:
