Triac dimmer after PIR sensor

Fiftyhertz · Jan 16, 2024

Hi there,

I am looking at specifying a Triac dimmer switch after a PIR and manual override to control several lights, i dont see an issue why this shouldnt work as the Triac dimmer is after the PIR. Has anyone done something like this before and had issues?

I know its a bit unconventional but should achieve what the client is after.

Thanks

[ElectriciansForums.net] Triac dimmer after PIR sensor

mainline · Jan 16, 2024

Fiftyhertz said:
Hi there,

I am looking at specifying a Triac dimmer switch after a PIR and manual override to control several lights, i dont see an issue why this shouldnt work as the Triac dimmer is after the PIR. Has anyone done something like this before and had issues?

I know its a bit unconventional but should achieve what the client is after.

Thanks
View attachment 112769

It will work fine as long as the pir is a relay type one.

Fiftyhertz · Jan 16, 2024

mainline said:
It will work fine as long as the pir is a relay type one.

Thankyou for the reply. Sorry, what do you mean a relay PIR? Could you send a link as an example?
Thanks again

mainline · Jan 17, 2024

Fiftyhertz said:
Thankyou for the reply. Sorry, what do you mean a relay PIR? Could you send a link as an example?
Thanks again

One that uses an internal relay to do the switching most are.

Zinc DION Outdoor Black PIR Sensor 180° - Screwfix

Order online at Screwfix.com. Polycarbonate. Wall-mounted PIR motion sensor with 180° detection range. Can be used for wall lights, ground lights, porches and garages. Time delay from 10 seconds to 7 minutes. FREE next day delivery available, free collection in 1 minute.

www.screwfix.com