Abstract: A pressure relief valve for a pressurized fluid system in which a compression spring is used to seal a compression shaft in communication with a front bushing having a O-ring seal is provided. The relief valve automatically relieves overpressure conditions and automatically resets to a closed, leak proof after an overpressure event subsides. The compression shaft is also in communication with an indicator pin, which is pushed out of the body of the relief valve during an overpressure event, and remains pushed out until manually reset, thus indicating that an overpressure event has occurred, even after the overpressure event has subsided.

Abstract: System terminal integrated with biometric sensor, such as a fingerprint sensor. Transaction terminal such as a point of sale system, automated teller machine (ATM) or other system. The system may include a touch screen display. Also, logic to process sales transactions may be included. The transaction terminal may include a cash drawer. The system authenticates users based on data from the sensor, and can regulate access, for example to a cash drawer, based on the authentication. Also described is a sensor module, security system, and method of operating a transaction terminal.

Abstract: System terminal integrated with biometric sensor, such as a fingerprint sensor. Transaction terminal such as a point of sale system, automated teller machine (ATM) or other system. The system may include a touch screen display. Also, logic to process sales transactions may be included. The transaction terminal may include a cash drawer. The system authenticates users based on data from the sensor, and can regulate access, for example to a cash drawer, based on the authentication. Also described is a sensor module, security system, and method of operating a transaction terminal.