BS 7273-4 covers the electrical control arrangements for actuation of mechanisms that unlock, release or open doors in the event of fire. 

BSI is presenting the proposed amendments to BS 7273-4:2015+A1:20 document in the form of a list of changes to the relevant sections of the text, drawings etc. BSI is  only inviting comments on these changes. Any comments on the rest of the document are likely to be reserved for the next revision.

The deadline for comments to BSI  is 4^th October 2020