by Mr White »
Sun Jan 12, 2020 9:11 pm
I can't say I have heard of a 2 gang 1 way switch.
Are you sure you have not got a 2 gang 2 way switch?
Said switch is readily available and it would account for your "problem"
I will assume you do have a 2 gang 2 way switch it will have markings on the back which are either
C L1 L2
L1 L2 L3
Com One way 2 way
It matters not which you have. But you should make sure you have used the same identified terminals on each switch, so for the sake of argument C and L1 on each switch.
Unless of course you are using one switch as 2 way, say landing light, in which case, go upstairs and turn the light off from upstairs, then both down stairs switches will be the same.