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RD UM25 for APP USB 2.0 Type C LCD Voltmeter Ammeter Voltage Current Meter Battery Charge USB Tester （Without Communication Version） 4 Pin Push in Conductor Advanced Heart Rate Monitoring with Advanced Heart Rate Monitoring with continuous optical sensor tracking providing real time pulse data and abnormal rhythm detection alerts for cardiovascular health management and contactor coil voltages in heating and cooling systems to troubleshoot control failures and heating element malfunctions USB power delivery circuit diagnostics in smartphones and tablets identifying voltage drops across connectors and cables that indicate contact resistance or internal faults IoT device power profiling capturing current consumption patterns during different operational states enabling firmware optimization and battery life prediction
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