This is the FD4 indicator font, arrows are Crumbelinaland-specific.
This font is used in Toshiba lift indicators of the lifts in Tai Tin HDB flats.
This font is used in Isralift lift indicators of the lifts in Tai Tin HDB flats.
This font is used in Hyundai lift indicators of the lifts in Tai Tin HDB flats.