ตัวสอบเทียบเครื่องวัดเสียง รุ่น 407766-NIST แบรนด์ Extech

SOUND CALIBRATOR 

Features:

• 1kHz sine wave at 94dB/114dB is generated to an accuracy of 5% (frequency) and 0.8dB
• Durable die-cast, aluminum housing
• Calibrates and verifies Sound Level Meter operation
• LED indicator lights up when power is on
• For use on Sound Level Meters with 0.5" or 1.0" microphones

Specifications

• Part Number : 407766-NIST
• Item Weight : 4.41 pounds
• Product Dimensions : 4 x 2.5 x 8.7 inches
• Item model number : 407766-NIST
• Batteries : 2 9V batteries required. (included)
• Style : With Certificate of Traceability to NIST
• Power Source : corded-electric
• Item Package Quantity : 1
• Batteries Included : Yes
• Batteries Required : Yes