My main concern is that a failure of a resistor or capacitor in the 240vac
to 12vdc part of the circuit could put  240vac on the operating terminals
which will be connected to wiring and switches not rate for that voltage.

I fail to see how a relay on the output would address that problem.

<https://www.avast.com/sig-email?utm_medium=3Demail&utm_source=3Dlink&utm_c=
ampaign=3Dsig-email&utm_content=3Dwebmail>
Virus-free.
www.avast.com
<https://www.avast.com/sig-email?utm_medium=3Demail&utm_source=3Dlink&utm_c=
ampaign=3Dsig-email&utm_content=3Dwebmail>
<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

__________________________________________
David C Brown
43 Bings Road
Whaley Bridge
High Peak                           Phone: 01663 733236
Derbyshire                eMail: dcb.home@gmail.com
SK23 7ND          web: www.bings-knowle.co.uk/dcb
<http://www.jb.man.ac.uk/~dcb>



*Sent from my etch-a-sketch*

On 20 July 2018 at 12:15, RussellMc <apptechnz@gmail.com> wrote:

> On 20 July 2018 at 22:19, David C Brown <dcb.home@gmail.com> wrote:
>
> > Thank you all for your advice.  It is clear that this module is not saf=
e
> > enough to use in the way I envisaged.
>
>
> As previously noted, using it to operate a suitably specified relay will =
do
> what you want. - and may be simpler and cheaper than many alternatives.
>
>
>   Russell
> --
> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>
--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.