说明

• TDH39 DD45 Audiometer Headphone High-Sensitivity Electric Audiometer Air Conduction Headphones Hearing Test Earphone Ear Care Feature: 1 This product is suitable for all audiometer forms of conductivity detection and checking out 2 Stable listening frequency is stable, high sensitivity the examine result is correct 3 Ergonomic designs, comfortable to wear, clean and convenient to use 4 Suitable for provincial CDC (Centers for Disease Control), municipal bodily examination centers, otolaryngology departments in major and small hospitals, working towards colleges for deaf children, using schools, listening to clinics, listening to aid stores, etc 5 Designed to produce high‑sensitivity, low‑distortion and a wide, smoothly frequency reaction Specification: Condition: one hundred pc Brand New Item Type: Audiometer Headphone Material: Plastic + Metal Earphone Type: Headphone Insert Plug Type: directly kind Purpose: Audiometer conductivity detection and screening Impedance (DC) : 10 Ohm ±1 Ohm Continuous Rated Power: 1000mW(milliwatt) at any frequency from one hundred to 8000Hz Input/Output Linearity: one thousand mW(milliwatt) ± 1 dB at input Plug Diameter: Approx 6 / zero Sensitivity: 3dB Distortion Rate: 3% Color: Black Audiometry Frequency: 125-8000Hz This product has been thoroughly tested/inspected from the manufacturing unit and located to have complete function, please be at liberty to purchase Main Customer Groups: Provincial CDC (Centers for Disease Control), municipal physical examination centers, otolaryngology departments in main and small hospitals, practising colleges for deaf children, driving schools, listening to clinics, hearing aid stores, etc Package List: 1 x Audiometer Headphone or 1 x Headband solely or 1 x Cable only

• 
• 
• 
• 
• 

审核