Hi,
Please ignore the coloured insulating tape, I added that before I removed the doorbell so I can recall what wire went where.
I am looking to replace this door chime with a more modern one due to the presence of a Mercury Switch.
I am not clear what the terminals "R" "2" "0" actually mean, as no modern door chimes seem to label them the same.
There are two door bell buttons, one at the front and one at the side.
Any ideas please.
Please ignore the coloured insulating tape, I added that before I removed the doorbell so I can recall what wire went where.
I am looking to replace this door chime with a more modern one due to the presence of a Mercury Switch.
I am not clear what the terminals "R" "2" "0" actually mean, as no modern door chimes seem to label them the same.
There are two door bell buttons, one at the front and one at the side.
Any ideas please.