433Mhz Shielded Low-Noise Super-Heterodyne Wireless RXB6 Receiver Board Module for Raspberry Pi.

I am extremely happy with this purchase. There's a lot of variation in quality in electronics today. This device works exceptionally well, and the downloadable supporting documents provide everything you need to get up and running with this device without having to spend hours trolling the internet. Even beginners will find the instructions clear enough and in non-mangled English. Anyone looking to use a Raspberry to control their household via 433 MHz electronics is provided with both hardware and software instructions in PDF format downloadable from the web address included. If only every component was this well supported.

I have been looking for a way to intercept RF433 signals from a couple of PIRs and a cheap door bell to integrate with my internal IoT stuff, which also uses some Sonoff switch equipment re-flashed with ESP Easy. Sonoff sell a RF bridge but I was worried this would expose me to the cloud that they use and possible security worries, and I wasn't keen on doing that. So I was experimenting with a Pi Zero, wiringPi and 433Utils libraries to achieve this -- a cheap receiver that I had worked, but only up to 30cm from the Pi. Too much RF noise. It seemed that I needed a superheterodyne version of the receiver and found this one. It came in a cardboard box with a wire to act as an aerial, wiring instructions and suggestions for use. Plugged it in, and hey presto, it received signals from the 433 PIR from two rooms away. Mission accomplished.