Oscilloscope sound frequencies + Optical detector For iOS / Android / Windows

Description

HELLO!
Thanks for coming in the description!
First of all I would like to meet!
My name is Denis!
I have several businesses.
We are in Ukraine!
All that is in my listings, we produce ourselves.
I do not buy products for resale!
Before you put it on sale, we use it ourselves, we ask friends all over Ukraine, so they used it and give us feedback on it. We consider and correct all comments. Only after that listing appears here!
We do not do or sell products that are of poor quality. I don’t see the point of wasting time and effort on this. I value each of my customers and try to make the best possible service for you! I always monitor the delivery of packages in automatic mode.
Features and further details
Oscilloscope + Spectrometer sound frequencies
iOS / ANDROID / Windows
ONLY FOR
sound frequencies mobile android
The sensor turns the smartphone into an Oscilloscope and a spectrum analyzer
Any software for analyzing sound signals (from a microphone) is suitable
The phone must be set to OFFLINE and be sure to turn off Wi-Fi
Small, comfortable, reliable.
Works with phones, tablets and PC
Simply connect the device to the audio output of your phone,
just download an application (for Free)
and turn your Smartphone
into Oscilloscope and Spectrometer
Optical sensor for smartphone allows to:
- see the lamp blinking, so to choose good lamps
- see what is going on in the car's electrical system (by detecting and analysing the blinking of cabin bulb)
-  check the IR remote controls
-  measure the rotational speed of shafts, axles, fans ets. (with laser pointer beam)
and to be honest, much more about what we do not know yet,
but constantly in search
Any software for analyzing signals (from a microphone) is suitable
The phone must be set to OFFLINE and be sure to turn off Wi-Fi
Small, comfortable, reliable.
Works with phones, tablets and PC
Simply connect the device to the audio output of your phone,
just download an application (for Free)
and turn your Smartphone
into
Optical detector / Blink meter / Optical receiver
Smartphone-Software (FREE):
OSCOPE, FFT Spectrum Analyzer,
Oscilloscope
.
Smallest on the market: 12 x 9 mm (total length: 24 mm)
Case: thin stainless steel, completely sealed.
Ready to answer any questions
Contact & Payment & Shipping
You can contact me at any time via eBay if you have any questions, comments, or product requests. I will reply you within 24 hours and will do our best to help you! I have no purpose in deceiving you! Sometimes different situations happen, but any of them can be solved!
We do not have PayPal in Ukraine. Therefore, I have two firms for this. One in Germany, the second in the USA. Please understand this and if suddenly the money did not come to you or to me right now, they will come within a few working days. I keep a payment history for 3 years. Sometimes I come across a situation where a product is bought but not paid. I contact the buyer. If you did not answer me, I wait 3 to 5 days and cancel the purchase. I won’t complain about you. Just please don't do this anymore!
I am sending you packages as quickly as possible. I pack them well and take them to the post office. I know almost all the tax and customs laws of countries. I am always open for communication with you, so please contact me if you need help in this matter.
Economic delivery. This is mail delivery. So far, there were no problems because of the virus, everything was fine with her. Now there are sometimes problems and delays. Excuse me in advance for this, but I cannot influence this. I very, very rarely encountered situations when these premises were lost. Therefore, I ask you for patience, they will definitely come to you!
Expedited Delivery. I use UPS. It's expensive, but this service has proven its reliability. Please REMEMBER THE MOST IMPORTANT! IF THE LIMIT FOR FREE IMPORTATION TO THE COUNTRY IS EXCEEDED, YOU WILL PAY THE CUSTOMS TAX! Consider this before choosing this shipping method!
Conclusion
I always leave you a positive review after your purchase. I do it just like that. Because I'm glad that you have chosen exactly my product. I put a lot of work into it. From time to time there are some misunderstandings. This happens because of some circumstances that are not always dependent on me. Please do not rush to leave a bad review about me, but rather contact me. And also, if you have read this description to the end, I will ask you to leave me a positive review. I am very pleased to see the result of my work.
Sincerely!