Kunkune Opiniones 

A1 first class quick delivery recommended many thanks A+++++

Perfect selection of useful electronics components, great packages. Awesomely fast delivery times, receiving the items even to remote areas in just about 2 days. Thumbs up, please keep up the same level of service!!!

itwas aneasy website to negotiate i found what i wated very quickly the price was also good and the delivery very quick

Very good service, fantastic array of components and modules. I abs would recommend this company for anyone to get a really fast and efficient shopping experience. I’ve been a long time customer and will be in the future.

I can't believe the speed of delivery. Ordered yesterday and arrived today. Well packaged sensor shield with a free gift of breadboard jumper wires. And all at a very good price. I'll be back to shop again.

perfect product delivered next day.

This is a company I would recommend.
I ordered an ESP32 module from them, it promptly arrived, sadly I had an issue with it.
I contacted them and to my surprise they dealt with it immediately and refunded me.
However, the problem was not with the unit it was me I hadn't understood how to operate it properly.
I contacted them and explained the situation, they were very understanding and professional in every way. I would have no problem dealing with this company again and I highly recommend them.
Regards Jim

Speedy... almost next day. I don't know how they do it. Finest quality as well.

Fast, free delivery and a great price. Can't ask for more really. Thanks.

Good prices, very quick service, all good! Thank you!

My original review is below. I asked for a refund and the company did refund me in full. From emails I received they are very proud of their refund policy. I would prefer to receive items that work! I see from another review that someone else received two fault items of the same device, so may be a bad batch. I have updated my original review from 1 star to 3 as the return procedure is clearly a good one.
It's just a shame the company has asked me not to do business with them again because of my negative review I posted here.

Original review 1 star -
Brought an ESP32 Devkit (38 pin) and no matter what combination of RST and Boot pushbutton you use, the device will not go into boot mode. Keep getting the following error from the Arduino IDE "A fatal error occurred: Failed to connect to ESP32: Wrong boot mode detected (0x13)! The chip needs to be in download mode".
More information - when I connect a serial monitor to the device it keeps reporting "rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOO" over and over again. Looks like this device is permanently in reset!

I am rating my personal experience. A few days ago i ordered this exact product "ESP32 Devkit Dual Core Wifi Bluetooth Board 38pin" and it did not work at all, ive asked on forums and used different cables and computers, but no luck. I asked for a replacement thinking it was just a bad board but no matter what i did it still didnt work. This morning i ordered an esp32 on amazon for 4 pounds more expensive and it just arrived 10 minutes ago and i have already gotten further with it than i have for 3 days with the one i bought from this store. Im not leaving a 1 star review since the customer support was super quick delivering my replacement and i also ordered another product from them that works like a charm. I am left to hope that this was just a one-off thing.

Although the item I bought was damaged they immediately offered me a replacement free of charge excellent communication very happy with the service would not hesitate to buy from them again

Awesome value for money and amazingly fast service.

I strongly recommend these guys to you.

Fast delivery.
Item as described.
Reasonable price.
Free shipping.
Useful website.

I didn't have any issues with the order or the product so I cannot state knowledge of after-sales service as I haven't needed it, but from a purchasing and delivery perspective, it was all very good. Perfect in fact.

I bought an FNIRSI GC-01 Geiger counter / nuclear radiation dosimeter.