Extech 407764-EXT 15ft (4.7m) Microphone Extension Cable

Key Features:

15 ft (4.7 m) Extended Reach

Provides a generous 15-foot extension for microphone placement, enabling accurate noise measurements in hard-to-reach or enclosed environments. Compatible with long-distance or remote sound level testing.

Broad Compatibility

Designed specifically for use with multiple Extech sound meters — works seamlessly with models 407764, 407355, 407780, and 407790.

Professional-Grade Testing Accessory

Ideal for industrial, environmental, and commercial sound measurement applications where meter placement needs flexibility without compromising accuracy.

Reliable Signal Integrity

Maintains precise data transmission between the microphone and meter even at extended lengths — keeps sound level readings dependable.

Durable Construction

Built to withstand regular field use with professional sound meters — rugged enough for workshop, plant, and environmental testing sites.

Easy to Install & Use

Plug-and-play extension cable — no tools or adapters required for standard compatible Extech microphones, saving setup time.

Enhances Measurement Flexibility

Extends placement options for more accurate decibel readings in complex acoustical environments such as machine enclosures, confined spaces, or auditoriums.

Key Technical Specifications:

Cable Length:

15 ft (4.7 m) total extension length — ideal for extended sound measurement reach in large enclosures, hard-to-access areas, and remote field locations.

Compatibility:

Designed for use with Extech sound meters including models 407355, 407780, 407790, and 407764 series instruments.

Application:

Extends microphone placement distance from the sound level meter for precise noise measurement in industrial, environmental, and occupational settings.

Connector Type:

OEM-compatible connector engineered to maintain accurate signal integrity between the microphone and sound meter. (Exact connector format per Extech design)

Signal Transmission:

Preserves microphone signal quality to ensure reliable data capture for sound analysis when used with compatible Extech meters.

Durability:

Rugged cable construction suited for field use and repeated flexing without compromising performance. (Typical for professional extension accessories)

Use Case:

Perfect for measuring noise levels in machinery enclosures, auditoriums, HVAC ducts, and other environments where direct meter placement is impractical.

OEM Accessory:

Official Extech accessory designed and tested to maintain full functional compatibility with supported sound level instruments.

Ideal For:

Acoustical engineers, safety inspectors, environmental monitoring professionals, and industrial maintenance teams requiring extended microphone reach.