I am sure today there is some smart device that will allow a PIR to trigger some relay to switch on, however can't really see how you would then turn it off?
In the main out door PIR's have a multi detection system and timer, they detect light levels, altering inferred inputs, and have a timer. The latter is the problem, and is why I did away with PIR's in my own property.
So yes we have PIR's without the multi function which we use for intruder alarms, and I use a smart relay on my landing light which will allow me to include voice and phone with the two way system, and allow timers to switch it on or off. Many of my smart devices will allow the use of a count down timer, however what we need to know is what are you trying to archive?
I have an outside light on a PIR which is also controlled with a smart switch that does not require a neutral, however on switching on the light is triggered for a short time, and the smart switch has to be battery powered or the PIR would mess it up.
So your aim is the first thing, my aim was for a outside light, not triggered by wild life, or any central heating flues, which I can switch on before leaving the car, and can switch off with ease once I am inside the house, which will not switch off when I am half way to house with hands full of shopping so can't get to my phone and use its built in torch. Since a badger is just as likely to set of a PIR to a human, I abandoned the idea of PIR's for most outside lights. In last house did not see that much wild life, so PIR's worked better.
If one lives in Llandudno you may want the intruder alarm to pick up wide life,
picture shows goat which has invaded a guest house. Since Colvid it seems they have become a problem. So explain what you want, rather than jumping in half way through the project, there may be an easy way to do what you want.
