- LCD insulation resistance tester: large backlit LCD display with clear unit symbols; easy to operate; functions as a megohmmeter for insulation testing. - Digital megohmmeter: full‑function protection; anti-high-voltage circuit design; backlit display for easy reading in any lighting. - Electronic megohmmeter: multiple protection measures including overload protection; alarm function for abnormal readings; LCD display for safe, reliable use. - Megohmmeter with backlight: large LCD with backlight for legible readings in low light; digital megohmmeter performance. Use scenarios: - Motor and pump maintenance: verify winding insulation resistance to detect deterioration before failure. - Electrical panel and cable testing: check insulation of wires and cables before commissioning or after repairs. - Transformer and switchgear checks: perform insulation integrity checks during preventive maintenance in field or workshop.