Compatibility between wireless 433MHz and WiFi (2.4GHz) objects purchased on the Internet

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In the image above there are some 433Mhz object that we are tested to check compatibility between them.
Also there are some WiFi objects, compatibles with Smart Life and Alexa app.
Below there is the list of tested objects we checked for control the real compatibility.

1 – Sonoff RF Bridge – 433 MHz to 2.4 GHz for Smart Home applications.
It’s work also with Amazon Alexa e Google Home.
-> BangGoodAmazond
The official APP to use with Sonoff Bride is: eWeLink
An Italian explanation – Spiegazioni su come usare eWeLink è qui e un video che spiega come configurare il Sonoff RF bridge è qui.

2 – eMylo® AC 220V…240Vac, 1000W, 1 channel Remote Control switch at 433MHz
-> Amazon

3 – HiKam PIR Wireless Infrared Detector for Internal and external use ( -20°C to +50°C ) -> Amazon

4 – Wireless Wifi and 433MHz Switch. Supports Amazon Alexa and Google Home
-> BangGoodAmazon
See our tutorial that is here.

5 – NEO – Kekeda WiFi smart door/window sensor – SMART LIFE & ALEXA compatible app.
-> Amazon
See our unusual use of this sensor:
How to show on your smartphone the status of your home burglar alarm

Last we need also to highlight the SHELLY system for home control, it’s a Bulgaria company.
SHELLY, at the moment, is only WiFi compatible.

6 – Wireless Remote Transmitter at 433 Mhz

Remote control max distance: 0-100m.
In our application the distance tested indoor is around 25m from this button to the Wireless Wifi and 433MHz Switch (4).

We tested this RF button with the SONOFF® RF Bridge WIFI 433 MHz (1) and Wireless Wifi and 433MHz Switch (4).
The producer declare the compatibility with:
SONOFF RF/RFR3/Slampher/iFan03/4CHProR2/TX Series/433 RF Bridge