Garden Sentry 12V Version – Part 1

Garden Sentry 12V Version – Part 1
The 12V irrigation solenoid has arrived so together with the 12V PIR sensor we can now start construction! This unit will guard the front yard from prowling cats.
Interesting to note that the prowlers have avoided the back yard after being water blasted with the other (original) Garden Sentry.

PIR Sensor – Part 3

PIR Sensor – Part 3
In Part 2 we determined the switched sensor output could handle @ 12V a current load up to 4 amps. Not sure about that? more research (is possible) is needed.
Having said that the 12V irrigation solenoid (still waiting for delivery) is rated @ 0.3A or 300mA. Anyway for the sake of fiddling I want to hang a relay off the sensor output so went looking for one.