HiKam, PIR sensor (second generation) – passive infrared sensor, for indoor and outdoor use, with 433 MHz wireless connectivity.
The manual is here (in Italian language).
We suggest to use in conjunction to SonOff bridge 433/WiFi or SonOff bridge 433/ZigBee.
Smart WIFI and 433MHz Smart Switch – Wireless RF Remote Control Smart Home Timer compatible with Alexa and Google Home (1 Switch + 1 Remote).
Quick reference manual is here (in Italian language), more detailed description is here.
Qui vi è un video che ne spiega l’uso in Italiano.
It is also possible to use it in conjunction to SonOff bridge 433/WiFi.
Remote control max distance: 0-100m.
In our application the distance tested indoor is around 25m from this button to the Wireless Smart WIFI and 433MHz Smart Switch.
On internet there are a lot of radio control (433 & 868 Mhz), below there is some links also for radio control compatible with Alexa, Ewelink APP, etc.
Radio controlled eMylo 433
eMylo® AC 220… 240Vac – 1000W – 2x 1 Channel Smart Remote Control switch RF transmitter 433MHz – wireless relay with receiver. The manual is here (in Italian language).
Below the manual in Italian language.