Timer Circuit design help please!!

Submitted by Nicholas on Thu, 10/17/2019 - 05:57

I have an outdoor strip light from Wide Loyal (120V power supply, 12V circuit, ~11.0W) that I want to put on a conditional timer. Conditions are as follows:

-Indoor light switch turns on and off light

-Proximity switch at gate for when the gate opens, it turns the light on for 2 minutes even if the indoor light switch is off

-Motion sensor at front door (around the corner from where the gate is) that turns on the light for 2 minutes even if the indoor light switch is off

-Circuit will be outdoor subject to -40°C to +40°C temperatures in a moisture proof box

I have seen timer relay boards online, but I want something where I didn't need a seperate 12V supply. Is there such a thing? Forgive me if this request sounds dumb, I am very new to circuit design, but am looking to learn.

 

Thanks in advance for all of your help!!

Nick