タイトルまたは説明

hearing aid Accessories Audiometer Cord dry case earphone ear construction model Audiometer Channels：Two independent signal channels and masked channels. frequency：Air conduction and Free sound field *******0Hz； (bone conduction*******0Hz ) Sound pressure range： Air conduction **5 ? **0 Hz **0 *- *0 HL **0 *- ***0Hz **0 *- **0HL ***0Hz **0 ? **0HL Bone conduction **0 ? ***0Hz **0 ? *0HL Precision：Sound pressure:**3dB，frequency: better than2% Distortion：Air conduction: <= 3%；Bone conduction: <=5% Input interface：Responsion Switch Output interface：Air conduction earphone，Bone conduction earphone，Free sound field Standard Function：Continuous Pure tone Testing voice，Pulse voice and twitter Step of Sound pressure: 5dB （Can be improved to :1dB） Sound pressure extension Communion with sufferer：Build-in quiz micrphone（****0dB adjustable）， Indicator light for responsion of sufferer Data transmission：Currently None Display Screen：double row LCD display Permission Standard：GB Power adapter：**0V AC transformer，9VOutput. Bulk& weight：**0 x **0 x *0mm / 2.0 kg Standard accessory：TDH**9P Earphone，B**1 Bone Conduction earphone， responder，