Battery operated outdoor motion sensor?

I require an outdoor motion sensor where i do not have a power source. I was hoping I could find a cheap low power battery operated motion sensor that sends a 433mhz rf signal when motion detected. Then use an rf receiver board with a photon to react the motion.
I can’t seem to find what I need, I think some kind of expansion PIR unit for a cheap alarm system is what I need but struggling to find one.


Have you Googled for “433mHz pir sensor”? That should give you plenty of options :o

Have a look at this site: