Ecm Industries Llc GMT-318 14 Range Analog Multimeter

Product Description

The ECM INDUSTRIES LLC GMT-318 is a 14-range analog multimeter designed for testing AC voltage, DC voltage, DC current, resistance, and battery condition. It features a color-coded analog display with manual range selection, making it straightforward to read across a wide range of field measurements. The meter ships with batteries, test leads, and a spare fuse, so it is ready to use out of the box. Fuse overload protection circuitry is built in, providing a layer of safety when working on live circuits. Licensed trades including HVAC technicians, electricians, and plumbers rely on analog meters like this for quick diagnostic checks in the field.

The GMT-318 is suited for residential and light commercial service work where a compact, reliable analog meter is preferred over a digital unit. It handles the everyday measurement tasks encountered during HVAC system diagnostics, electrical panel checks, plumbing equipment troubleshooting, and general low-voltage circuit testing. Manual range selection gives the technician direct control over measurement sensitivity, which is useful when working in environments with electrical noise that can affect auto-ranging instruments.

Key Features

• 14 measurement ranges covering AC voltage, DC voltage, DC current, resistance, and battery testing
• Color-coded analog display for fast, at-a-glance readings in the field
• Manual range selection for precise control over measurement sensitivity
• Built-in fuse overload protection circuitry to protect the meter and the user
• Includes batteries, test leads, and a spare fuse — field-ready out of the box
• Agency approved with a 1-year warranty

Compatibility

Designed as a general-purpose analog multimeter suitable for use across HVAC, electrical, plumbing, and pool service applications where AC voltage, DC voltage, DC current, resistance, and battery measurements are required.

Installation Notes

Always power down or de-energize the circuit being tested before connecting or disconnecting test leads where safe and practical to do so. Verify the selected measurement range is appropriate for the expected circuit values before taking a reading. This meter should be used by qualified trade personnel familiar with electrical safety practices in accordance with applicable NEC guidelines. Inspect test leads for damage before each use and replace them if insulation is cracked or compromised.