宇视监控套装四路
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- 产品描述
| 产品尺寸 | 长: 3.00cm | 宽: 3.00cm | 高: 0.50cm | 产品重量 | 0.070kg |
| 包装尺寸 | 长: 10.00cm | 宽: 5.00cm | 高: 3.00cm | 包装重量 | 0.120kg |
【Smoother and Clearer】- 4 Channels digital hearing amplifier with 3 listening programs switch in general environment, restaurant and watching TV freely. One-touch switch, 3-speed adjustment, easy to operate. 3 different sizes of ear domes to avoid whistling.
【Smart Noise Reduction】- Realink hearing amplifier features digital chip. Intelligent wave conduction audio processing, intelligent dual filtering, making the sound clearer. One-touch switch, 3-speed adjustment, easy to operate.
【Small Mini and Invisible】- The hearing assist only weight 3g. Streamlined appearance，the 1mm sound tube is firmly attached to the ear, more suitable for wearing glasses. Get all day comfort.
【External Receiver】- Pluggable receiver RIC. Realink hearing amplifier features RIC technology. Eliminating acoustic feedback effectively. The receiver is closer to the eardrum, making the sound more natural and realistic.
【Let Love Be Heard】- 60 Days Money Back Guarantee and 1 Year Warranty. Contact us anytime if you have any questions.
Realink 4 Channels Digital Hearing Amplifier
3 Program：1) Normal Setting 2) Noisy Setting（outdoor or restaurant） 3) Telecoil Setting
Product Type: Digital Ear Back Device
Parameter：
60° /Celsius -4°F to 140°F
Air humidity: ≤ 85%
Air pressure: 500~1100 kPa
Technical data HD-40
Peak OSPL 90 (dB SPL) 103
HAF OSPL 90 (dB SPL) 99
Peak gain (dB) 35
HAF full gain (dB) 25
EQ input noise (dB) ≤ 32
Battery current (mA) ≤ 1.5
Frequency range (Hz) 500~5000
Battery: A312
Total harmonic distortion:
500Hz (%) ≤ 3.0
800Hz (%) ≤ 2.0
1600Hz (%) ≤ 1.0