Extech

Extech

Extech Instruments is an American manufacturer of handheld and portable test and measurement equipment, operating as a subsidiary of FLIR Systems. The company produces a broad range of instruments for electrical, HVAC, environmental, and industrial testing applications, serving electricians, field technicians, facility managers, and laboratory professionals worldwide.

Extech's portfolio spans insulation resistance testers, milliohm meters, ground resistance testers, data loggers, DC power supplies, clamp meters, multimeters, and environmental meters. The brand is recognized for delivering professional-grade accuracy in compact, portable form factors suited for both field and bench use.

Key Product Lines

• Insulation Resistance Testers & Megohmmeters — for testing cable and motor insulation integrity to IEC and IEEE standards
• Milliohm & Microohm Meters — for low-resistance measurements in bonding, contact, and wiring applications
• Data Loggers — for recording temperature, humidity, voltage, and current over extended periods
• Ground Resistance Testers — for verifying electrical grounding system safety and compliance
• DC Power Supplies — for bench testing and powering electronic assemblies

Industries Served

Extech instruments are widely used in electrical maintenance, industrial facilities, HVAC, telecommunications, power utilities, and education. Their testers are applied in predictive maintenance programs, safety compliance testing, and quality assurance across manufacturing and infrastructure sectors.