Specification Brand : Square D BulletPoint1 : Pressure Switch - Water or Air BulletPoint2 : Pressure Switch used to control electrically driven motors BulletPoint3 : Diaphragm Actuated BulletPoint4 : Includes a 2-way pressure release valve BulletPoint5 : Resistive film pressure sensor force sensitive robot flexible for Arduino CircuitType : 2-way ConnectivityProtocol : X-10 ConnectorType : Screw ExternallyAssignedProductIdentifier1 : 785901734864 ExternallyAssignedProductIdentifier2 : 0785901734864 InternationalProtectionRating : IP20 ItemName : Telemecanique Sensors 9013FHG12J39 Air-Compressor Pressure Switch, 135 psi Set Off, 30 psi Fixed Differential, 1/4" NPSF Internal ItemPackageDimensions_Height : 12 inches ItemPackageDimensions_Length : 12 inches ItemPackageDimensions_Width : 12 inches ItemPackageQuantity : 1 ItemTypeKeyword : electronic-pressure-sensors Manufacturer : Telemecanique Sensors Material : Copper ModelNumber : 9013FHG12J39 NumberOfItems : 1 OperationMode : Off PartNumber : 9013FHG12J39 ProductDescription : The resistive membrane pressure sensor is small in size and easy to install. It is suitable for measuring the trend or presence of pressure changes, and is not suitable for specific numerical calculations of absolute values. Pin description VCC: Positive power supply voltage (5V) GND: negative supply voltage DO: High level signal output AO: Analog voltage signal output (0-3.3V) AO-RES: Amplification adjustment potentiometer DO-RES: Comparison threshold adjustment potentiometer Instructions for use Gasket installation Place the green surface of the gasket on the sensor, at the center of the sensor's sensing area, and then apply the tested object vertically on the gasket, so that the effective contact and force between the sensor and the tested object are all applied to the sensor's sensing area . Precautions when installing and using the sensor 1. Try to choose a stable, smooth and flat installation surface; When your mounting surface is curved, you will inevitably bend it when you install the sensor, so that the sensor's sensing area will be stressed, which will affect the accuracy of the sensor to a certain extent, so be careful not to make the sensor effective The surface is installed on a curved surface with a large arc (note: the circular effective surface cannot be bent, and the long tail can be bent); 2. It is recommended to use a flexible gasket with relatively stable elasticity between the sensor and the measured object to ensure effective contact between the sensor and the measured object; 3. Keep the contact surface of the sensing area clean; 4. The force should not exceed its rated range; 5. Try not to solder it directly to a universal board or a circuit board that does not belong to its specific package, so as to prevent the tail from being thermally deformed and causing poor contact. The metal terminal of the sensor can be connected with the wire by quick welding;