Model YBN-UA(WHT) is a mounting adaptor for ALK-ASN analogue sensor and YBN-R/3(WHT) base. The YBN-UA(WHT) allows a base and head to be flush mounted by providing a recess fixing the celling.
It must be used with a fixing clamp kit (YYA-1) which secures the YBN-UA within a pre-cut hole up to a maximum ceiling thickness of 30mm (sold seperately).