An unusual request I know, but the situation is that my elderly dad is terminally ill and still at home but about to be moved to a hospital bed downstairs. As mum will be sleeping upstairs I think a 2-way communication baby monitor would be really useful, just so they can hear each other and for reassurance at night... Technology has moved on quite a bit since I had these for my babies many years ago so I need some guidance. We don't need a camera/video or any fancy features but they do need to be able to communicate and mum is hard of hearing... If anyone can recommend a specific model/s I'd be v grateful.