The best replacement for pir is pur.

The best alternatives to pir are rated as following:
★★★★★  pur
★★★★  cir
★★★  door contacts
★★  ultrasonic
★  phenolic
★  dual tech
★  motion detector
★  photocell
  pnf
  glaswol

Your alternative for pir is not listed? Suggest!
Speaking about pir, one probably shouldn't forget about photocell.

Other search terms related to pir and their ratings are:
★★★★★ photocell
★★★ autodialer
★★ light sensor
You have in mind a companion for pir and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of pir in all years. Click on graph for more.
pir
pur
cir