Which sensor can I use for straight line?
for example if I cross the first step I need to trigger it , as PIR gives a wide range it can’t be used. Can you please suggest any other sensors maybe IR.
Just my 2 pennies from playing with the 602 and 505.
602 worked very well for me and very sensitive, though I may try and adjust that but lets see.
I am debating about fitting a photo resistor (its in a led type package) to turn it off when its bright upstairs.
505 I had no luck working correctly as it seemed to hold the lights on for some time.
Maybe I was using this one wrong or then its broken as I bought it from Aliexpress.
Next is 501 when I get some time.