Re: Checking whether door is locked

["etj_webster" <etj_webster@xxxxxxx>]

--- In ukha_d@xxxxxxx, Ian Tresman <ian@k...> wrote:
> There are electronic sensors available for checking whether=20
> a door is closed.
>=20
> But is there anything out there that will let me check=20
> electronically whether a door has been locked, that I=20
> could use with my existing key-operated locks?
>=20
> I'd like a control panel that will tell me at a glance,=20
> which exterior doors still need locking.
>=20
> Regards,
> Ian Tresman

I would have thought that without too much difficulty you=20
would be able to embed a hall effect sensor in the striker=20
housing. Then, when the deadlock has been activated the hall=20
effect switch should detect the presence of the striker bolt.

This might depend on whether you have a brass bolt, or one=20
with a strengthened steel rod in it (ferrous vs non-ferrous)

Just a thought. Probably better than trying to sense the lock=20
position on the door...

Cheers,
John.