WayinTop 3 Set 433MHz RF Wireless Transmitter and Receiver Module + RF 433MHz Copper Spring Antenna Kit, High Frequency Super Regenerative Transceiver Module for Arduino Burglar Alarm

Due to the reviewers having problems with these units I was hesitant to order, but I needed some NOW and I couldn't wait for other suppliers. I have a few 315Mhz modules around, but I needed 433Mhz and I couldn't remember where I got the 315 modules from anyhow so I took a chance.Upon opening the package I was a little concerned as there was no glue/goop on the tuning screw as you can see it the picture. The top module is one of my 315Mhz from a different source with properly tuned, tested, and fixed tuning! The bottom module, which I've soldered antenna to, has no such locking goo. This made me highly concerned they may not be within proper frequency tuning.Thankfully all the units tested just fine and were able to both transmit and receive to/from each module one with another. Range tested initially with an Arduino Uno as the tx units and Seeeduino XAIO running the rx units. At a distance of approximately 20" (~508mm) I experienced zero data loss with no antenna mounted on any units. I was even able to control the target device, as I need to right now, at 10ft without an antenna on the transmitter without a problem. Just from that quick testing I can only guess that others have received bad QC units and should be returned for good ones. Maybe they didn't tune the frequency properly etc. Without proper RF gear it could be very difficult to verify for yourself in a hobby shop. But again, my units work just fine and I know they are on good 433Mhz because they interface with my existing known hardware.They work just fine with the RadioHead library a well as the rc-switch library! Assuming I received units with good QC, I'd say these are worthwhile. I only removed stars for the lack of thread locking on the tuning screw. They should not leave testing without it! And for the minor bad soldering on a couple of pins here and there where a bridge is almost made to adjoining pins...that could be quite bad. I solder whisker can be seen in one picture on the back of the tx unit. Also note that antenna solder holes were/are present on my units, I mention it as other reviewers received boards without holes.

These devices seem to function properly. I'm glad I bought them but only because they are super cheap and I've never worked with 433MHz before. The ones I received were missing two "coils". In some of the product pictures, two coils are shown. In others only one. You have to look carefully. From what I understand they should have both coils. That might be a reason to pick another vendor. However, they do appear to work. I've only tested them short-range ( a couple of cm). Be careful of the pin labels. They ARE the same as online docs you will see, but the printing is a bit confusing. I would buy these again, but I also bought a couple of "RXB6" receivers which appear to be much better receivers. Still it all depends on application and its nice to have a transmitter/Receiver combo to play with. I would buy these again.

I got this module set to control some things around my home using a raspberry pi and an arduino. I'm interested in the transmitter primarily and I notice a couple of issues with it. First off, this module set does not come with a manual or any spec sheets so you're on your own. The transmitter has a couple of holes that appear to be solder points for an antenna, so I was confused as to where the included spring antennas should go. I had to dig around online to find similar modules also marked "fs1000a" which led me to discover the right location for the antenna (far corner of the board). Now in terms of frequency, these transmitter units are not calibrated for 433.92. I output a constant signal and used an SDR to monitor the 433.92 frequency and I can clearly see that I was getting varying results from the transmitter modules, the frequency they hit were around 434 - 435 MHz when trying with 5v and 12v input. In order ot get these to sit more centered around 433.92 MHz you will need to experiment with making your own antenna. One of the three transmitters also arrived not working. I tested all three using the same method of sending a signal and monitoring with an SDR. For what I need to do with these, I think I will need to look elsewhere for a more accurate and reliable transmitter with the correct antenna.

I got the three pack. I was pretty frustrated as the first receiver only had a range of 2 CENTIMETERS. I was going to return them but I tried a second receiver and I got close to 200 feet and I could have probably gone further. That is with the transmitter supplied with 9 volts and the spring antenna on both.Note: I noticed that touching a small metal screwdriver to the metal adjustment screw on the receiver dramatically increased the range. Not sure how that works but I am guessing using a longer antenna would have a similar effect. For the price, who cares if some of the parts are bad.

El equipo funciona bien, como enseñanza o prácitca muy útil. La distancia de conexión es muy pequeña. Solo para aprendizaje creo que es útil.

I have received 2 orders of these devices (WayinTop - 3 TX/RX pairs). In the first order, one of the transmitters didn't work. After a call to customer support, a very helpful representative offered to send another set so that I could replace the bad transmitter and return the second set ( I already had the parts in a project , so I didn't want to return the originals). The problem was that NONE of the transmitters in the replacement order worked. I ended up just returning the replacement set and ordered from another seller( developmoreus - no longer in stock as of tonight). I received those today. Only 4 of the 5 transmitters worked but at least now I have enough to continue. All 3 orders were identical products - same marking, components, and part numbers. Just poor quality control, but at least they are cheap.

I was using arduinos to supply them at 5v. Abit disappointed but they were a little too cheap

Il dispositivo funziona anche a metri di distanza ,alimentato a 5 volt. Il mio problema è che avevo bisogno di una risposta diversa sul ricevitore , nel senso che pensavo, che finché fosse attivo l'impulso sul trasmettitore , fosse lo stesso sul ricevitore.Invece la risposta è di tipo impulsivo , cioè si verifica solo un impulso sul ricevitore. Inoltre ho notato che mentre si aumenta la tensione di alimentazione sul ricevitore , si creano degli impulsi in uscita , fatto piuttosto strano per la mia poca esperienza . A conti fatti ho speso 10€ per la curiosità di vedere il funzionamento , ma all'atto pratico , nulla che mi possa aiutare.

Although all of the modules except for one receiver "functioned", the module is essentially useless as its range is less than 20 cm (far from its claim of "20-200 meters"). With such a small range, it has very little application. The modules are probably so bad because of the missing coil one Spanish speaking reviewer mentioned, on the transmitter chips there is one coil and above it an area for another one to go, you can see this coil on other sellers modules but it doesn't come on this one, likely being the cause for the tiny range.

Con tanto comentario negativo, estuve a punto de ni siquira intentarlo. De momento he cogido uno de los transmisores, le he metido un cablecito de unos 10cm como cable y he conseguido, desde dentro de casa, abrir una puerta corredera que esta fuera a unos 20 metros. Tanto alimentandolo con 5v como con 3,3v.El transmisor es de los que solo tiene una bobina pero funciona igual. Igual he tenido suerte. Todavia no he podido probar los otros. Si acaso, ya lo comento.

È un prodotto molto economico, non si può pretendere molto. Va bene se si vuole imparare ad usare le librerie di arduino, ma non si riesce a fare altro. Si rompono quasi subito, e il “raggio d’azione” è veramente ridicolo (meno di un metro anche alimentato a 12v). Alcuni non funzionano proprio. Consiglio di usare altri moduli come rxb6.