We have an old EI140 smoke detector which we need to replace but can't find this model for sale any longer.  Can only find EI14.  Will the EI141 head unit fit on the existing EI140 base unit?  Don't really want to change the bases if we don't need to.

Hi Gill,

There is an easy solution, as there are dedicated replacement heads available manufactured by Ei Electronics, the manufacturer. These heads can be fitted without electrician and come with instructions, a small tool and new stickers for the fuse box

 

Harry

Yo, is there an update with this one? I have the same and the replacement heads link no longer in use 

 

ta 

Good morning 

you can use this smoke alarm with your old Ei140 series base.

thanks

Rahel