Radar Sensors
- https://perimetersystems.com.au/wp-content/uploads/2022/05/SR_150-Data-Sheet.pdf
- https://www.ebay.com.au/itm/385604952667?chn=ps&norover=1&mkevt=1&mkrid=705-159824-816807-4&mkcid=2&mkscid=101&itemid=385604952667&targetid=4585444530151283&device=c&mktype=&googleloc=&poi=&campaignid=412352395&mkgroupid=1309518645581565&rlsatarget=pla-4585444530151283&abcId=9300543&merchantid=136820&msclkid=ad1ed0e8599a158f0929b48a8089c4f7