Ecm Industries Llc GDT-311 Digital Multimeter 500VAC 250VDC

Product Description

The ECM INDUSTRIES LLC GDT-311 is a 3-function general-purpose digital multimeter designed for electrical testing in residential and light commercial applications. It measures AC voltage up to 500 volts, DC voltage up to 250 volts, and resistance up to 2 megaohms. The unit ships complete with test leads and an instruction manual, making it a ready-to-use instrument for technicians who need a reliable handheld meter for routine diagnostic work. CULUS approval confirms the unit meets recognized North American safety standards for electrical test equipment.

This multimeter is suited for general electrical troubleshooting across household circuits, HVAC low-voltage control wiring, and other light-duty measurement tasks. Its three core functions cover the most common field measurements a technician encounters during service calls. The included test leads allow immediate use without additional accessories. It is appropriate for electricians, HVAC technicians, and knowledgeable maintenance personnel who require a compact, straightforward instrument for voltage and continuity checks.

Key Features

• Measures AC voltage up to 500 volts
• Measures DC voltage up to 250 volts
• Resistance measurement up to 2 megaohms
• Ships with test leads and instruction manual included
• CULUS approved for North American safety compliance
• Three-function operation for voltage and resistance diagnostics

Compatibility

Designed for general-purpose electrical testing in most household and light commercial applications where AC voltage, DC voltage, and resistance measurements are required.

Installation Notes

This instrument is used by licensed electricians, HVAC technicians, and qualified maintenance personnel. Always de-energize and lock out the circuit before making contact with test probes where lockout procedures apply. Confirm the meter's voltage rating does not exceed the circuit being tested. Follow all applicable NEC requirements and local codes when performing electrical diagnostics.