Feature: 1.ABS, shockproof material: The sheath is made of double-layer insulating material, which is shockproof and wear-resistant. Avoid hardware damage caused by the host falling. 2. LCD HD background: long press to turn on the backlight, no longer afraid of night, can work in dark environment. 3. 100 sets of data storage: After measuring the insulation resistance value, first long press the key to save the data, the screen displays the "HOLD" symbol, and then press the MEN READ key to save the data. Press to delete a single dataset, press PI/DAR to delete all stored data 4. Insulation resistance high voltage output: connect the test leads to both ends of the instrument, select the output voltage value and press the (TEST) button to measure the discharge 5. Multi-purpose display: suitable for measuring the insulation resistance of various electrical equipment and insulating materials such as transformers, motors, cables, switches, electrical appliances, etc. It is suitable for the maintenance, repair, test and verification of various electrical equipment. Specification: Model: Insulation Resistance Tester Type: IT20G/IT200G (optional) AC/DC voltage measurement: 10~600V 100 groups of data storage: yes Screen Backlight: Yes Absorption Ratio DAR: Yes Polarization Index PI: Yes Auto Range: Yes Automatic discharge: yes Automatic shutdown: yes Data retention: yes Low Voltage Alert: Yes Test voltage display: yes High pressure indication: yes Measurement time display: yes Battery: 8 AA 15V batteries (not included) Package Included: Host*1 1 pair of clips 1 pair Plastic box*1