Aibecy Ender Full Assembled Extruder Hotend Kit with Aluminum Heating Block 0.4mm Nozzle Cooling Fan 24V Compatible with -3/Ender-3 3D Printer

Preferred Mateiral: cover is made of ABS insulation material, shockproof and can provide a long service time.;LCD screen with backlight design, you can press button to turn on or turn off backlight according to your needs, so you can see testing data clear even at night.;100 Group Data Storage: After measuring insulation resistance value, press HOLD button to keep data first, and screen will appear "HOLD" symbol, and then press READ button to save data.;Absorption Ratio (DAR): Determine whether equipment is affected by dampness of insulation resistance measurement Instrument programming defaults for calculating DAR with insulation resistance values at 15 seconds and 60 seconds.;Polarization Index (PI): PI measurement is used to identify aging of insulation quality. insulation resistance value at 1 and 10 minutes is used to calculate PI.;Wide Applications: This tool is suitable for measuring insulation resistance of , motors, cables, switches, electrical appliances and other electrical equipment and insulation materials.;Suitable for various electrical equipment maintenance, repairs, test and verification.