Mediates the efflux of short-chain diamines when energized by an electrochemical gradient (By similarity). Confers resistance to chlorhexidine, benzalkonium, proflavine and acriflavine. Mediates efflux of both proflavine and acriflavine via an energy-dependent mechanism (PubMed:25670776). Belongs to the proteobacterial antimicrobial compound efflux (PACE) (TC 2.A.117) family.