Hydrogen gas Concentration sensor transmitter H2 gas sensor online test 485 232 0 5v switching value 4 20MA plc modbu 0 1000ppm

Hydrogen gas Concentration sensor transmitter H2 gas sensor online test 485 232 0 5v switching value 4 20MA plc modbu 0 1000ppm
  • Продавецflimmer.com
  • Список ценUS $52.00piece
  • Продажная ценаUS $52.00piece
  • ДоставкаБесплатная доставка
  • Рейтинги3,3 (240)

Oписание продукта



big sale

Original Brand, high quality earphones!

Welcome to do OEM, wholesale, retail! 

All products are sent out within 3 working days, fastly shipping for free. Tracking number for you on time, safety to you!

New Ear Care Health Hearing Aid

Mini Adjustable Tone Digital Voice

Hearing Aids for The Elderly

Hearing Loss Ear Care S-900

1. in ear and shell copper column connection, solid structure.

2. high-fidelity microphone, small distortion, low noise;

3. Comfortable adjustment, can reduce noise.

4. ITC analog hearing aid, beautifully designed for moderate to severe hearing patients.

Products technical parameter                                                                          

1. Maximum saturation sound pressure ≥ 110dB ± 5dB pole
2. full block sound gain: ≥ 30dB
3. The average gain: ≥ 40dB
4. Equivalent noise: ≤ 40dB.
5. Frequency Response: 300Hz-4000Hz
6. Operating voltage: DC1.5V
7. Operating Current: ≤ 4mA
Product weight: 3g
Product size: 2 * 1.9 * 1.5cm
Package: paper + plastic box
Package size: 11.1 * 8.4 * 3.3cm

Package Including                                                                                           

1* Deaf-aid earphone

1* Zinc air hearing aid battery A312

3* silicone different size ear plugs (small, medium, big)

1* cleaning wax brush

1* WHITE gift box

1* English manual

1* FEIE warranty card

New Ear Care Health Hearing Aid 

Mini Adjustable Tone Digital Voice 

Hearing Aids for The Elderly 

Hearing Loss Ear Care S-900







S-900 (2)

S-900S-900 (10)S-900 (11)S-900 (4)S-900 (3)


ITC hearing aid

Feedback from Buyer:


1) It is super mini size and light weight, not easily to be seen;


2) Adjust the volume to the minimum before wearing;


3) Increase the volume gradually to avoid sudden increase in suond;


4)When you not use, take battery out of saving power;


5) Convenient for watching moive, enjoy the drama, attending meeting, watching TV or haveing class;


It can help you hear the sound clearly and loudly !


Problem if you met:                                                                                          

Pls read the manual at first if don\'t know how to use it or contact our customer service.

If you feel the whistling sound:

1. Choose a suitable ear plug to make the product sealed in the ear canal

2. Low down the sound volume

3. When you put into battery , please be quick , to put the product into the ear


Adjust volume to the minimum before wearing.

Choose an earplug of slightly bigger size to avoid whistler.

Increase volume gradually to avoid sudden increase in sound.

Keep the ear plug clean

Remove the battery if you don\'t use it for long time.

Shipping & payment & return                                                                          

about shipping

Warranty & return:                                                                                           

This product will have 12 months guarantee, any problems with the device, we will repaire for you for free during the warranty.

1) 100% of all delivered products are in good quality and under strict checking before sending.We will try our best to avoid quality problem.

2)We refuse returning the goods without any quality defects if you change your mind or don\'t like the items after you received the goods. 

3) You have 7 days to contact us and 30 dyas to return it from the date of receiving. If this iem is in your possesion more than 7 days, it is considered used and we will not issue you a refund or replacement.Please pack the item well and MUST provide us tracking number, specific reason for the return.


1) Please leave us positive feedback and 5 star rates, if you are satisfied with our item and service.

2) Please CONTACT US before leaving any 1,2,3 ratings, neutral or negative feeback or open an dispute, we understand your concerns, so we will do our best to resolve the problems for you, thank you

Any problems you met, pls contact us at once, we are very responsible seller and we are professional in medical hearing aid supplies.