Hioki benchtop digital multimeters are high precision 5-1/2 digit meters that sample 300 times/second. The 3238 Series come with a comparator function that is especially useful for production lines. CAT II 300 V. High-speed 3.3 msec comparator for production line use. Comparator function with open-collector output, beep sound, or LED display. Built-in RS-232C interface and External control I/O, or added GP-IB interface (-01 model). The output can be interfaced with external equipment. The Product has high input impedance, so there is no loading effect in the multimeter. The Product is available in smaller sizes or compact. An unambiguous reading is obtained. There are more accurate than an analog multimeter. Portable size makes it is easy to carry anywhere. The Product has a very high input impedance. The Product causes fewer meter loading effects on the circuit being tested. Some advanced digital multimeter has a microprocessor and can store the reading for further processing. The Product reduces reading and interpolation errors. Unlike analog multimeter, zero adjustments are not required. It can be used for the measurement of AC and DC quantity. It can be used for the measurement of various parameters such as resistance, voltage, and current, etc.