APPA 97R Information The APPA 97R is a professional digital multimeter that offers a wide range of measurements, including AC/DC voltage, current, resistance, capacitance, frequency, duty cycle, diode test, continuity, and temperature. It also features a True-RMS measurement mode, which provides accurate measurements of non-sinusoidal signals. The APPA 97R is a rugged and durable multimeter that is designed to withstand harsh environments. It is IP65 rated, which means that it is protected against dust and water. The multimeter also features a backlit display that makes it easy to read in low-light conditions.