Handheld Digital Multimeter, 4.5-digit, with Organic LED Display (OLED) The Agilent (now Keysight) U1253B 4.5-digit handheld digital multimeter (DMM) is feature-packed to simplify the troubleshooting of electronics and electrical circuits indoors, on the bench or in the field. Key capabilities include its organic LED (OLED) display that provides razor-sharp readings even in dark, off-angle situations. The U1253B is the world's first OLED handheld DMM of its kind. For those long, continuous measurements, the DMM equips you with the easy-to-use GUI data-logging software to automate virtually unlimited data recordings to PC. The U1253B comes with an integrated 20 MHz frequency counter for high frequency measurements, and a built-in programmable square-wave generator with selectable frequency and duty cycle. With the versatile U1253B, you are well equipped to perform thorough troubleshooting of any faulty circuit. Organic LED display 160° viewing angle 2000:1 contrast ratio 0.025% basic DC voltage accuracy, True RMS AC, AC+DC measurement Voltage measurement range: 10 µV to 1000 V Current measurement range: 10 nA to 10A Resistance measurement range: 0,01 Ohm to 500 MOhm Capacitiy measurement range: 1pf to 100 mF Frequency measurement range: 0,001 Hz to 1 MHz 20 MHz frequency counter Programmable square-wave generator CAT III 1000V and CAT IV 600V overvoltage protection