I just bought 3 Twin Packs of these PIR LIGHTS, they measure roughly 6 X 3.5" or 150mm X 90 mm and they have a 2500 mah Battery in them and they are Solar powered with 180 LED's, I got these from Amazon,
Instead of using the supplied screws I bought a Roll of 25mm X 4.5 Meters Magnetic Tape that is sticky on one side and ran 2 strips of it along the back of them going from left to right, I tried running 2 bits Vertically But it did not Grip metal as Good as it dose going from L to R then I roughed up the Tape to take the shine off it Sanding along the length of the Tape and it Gripped really well,
Anyways the reason for these is for when I go Bush I can place one on each side of the Van and one on each end So no matter where I walk around Camp they will light up the area,
They have 3 settings, 1) All 180 LED's come on when you break the Beam and then go off once no one is near, 2) When you break the Beam it comes on very bright and then once you are out of Range they stay On but they drop the brightness by about 50 or 60% and they stay at that brightness unless someone breaks the beam again and they Get bright again and after 15 seconds they go back to the 50% mode again, 3) On this setting they Just come on and Stay on, There is a little Button on the front near the PIR sensor that you have to press for a couple of second to power them up and each Quick press changes the mode and on the third press it turns them off,
These are Great for around the Camp but also warn you when others are Near, Plus they will spook anyone up to no good,
Anyways hope that helps,
J
EDIT:- Oh and they have a 2 year warranty and the brightness is 2000 Lumins
https://www.amazon.co.uk/dp/B07MPW4H78/ref=pe_3187911_189395841_TE_dp_1
https://www.prospectingaustralia.com/forum/img/member-images/3775/1578976838_pir_lights.jpg