Extractor fan relay for two independent light switches

[metanet]

Thinking a 240V AC relay activated by two independent light switches could be used to switch power to a shared inline extractor fan. The fan serves two bathrooms, just needs to be activated from two different switched live lighting circuits.
I'm aware double pole light switches could be used in this scenario but the light switches didn't pass wife test.

Anyone know of a dual input relay I could use for this purpose?

Thanks
Meta

 

[mainline]

That's it. But both lights must be on the same circuit.

It's quite common - some applications use a purpose designed DC coil, some use an AC coil and just feed it DC. Heatmiser do the latter in their UFH control/wiring centers.
Since it's only half wave, and relies on the coil inductance to maintain the current for over half of each cycle (so it's not smooth DC, and significantly less effective voltage than full-wave & smoothed), I doubt it's particularly bad for the coil.

https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=13C3250_AppNote&DocType=CS&DocLang=EN

 

[Simon47]

https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=13C3250_AppNote&DocType=CS&DocLang=EN

Interesting document thanks. But it neglects the half-wave rectification, and also totally neglects the effect of the coil inductance when presented with a non-smoothed rectified AC. In practice, the effective current throught the coil will be considerably lower than a simple I=V/R calculation might suggest.