So I have been playing around with a some used PIRs and I think I have learned a few things but I just want to confirm. I am working with 12V PIRs and have 12V actuators or 12 V LEDs hooked to them. First I noticed if I tried to directly hook the PIR to the actuator that the PIR triggers over and over again even if there is clearly nothing moving (even covering the sensor does not stop it). I believe the reason is that if needs a resistor between the PIR and the actuator because the sudden change in the flow of electricity is creating a false PIR reading. Is that correct? Based on that I believe a TDL-2023 will work the best for this application. I have one TDL-2023 currently among my used lot but it seems to just always stay on so I am assuming it has just failed. If anyone has any insights or links to more learning material i would greatly appreciate your input.