Based on this product's specifications, here are some alternatives and similar models
APS 991 APS — APS brand model 991 (MPN 991)
Summary description:
APS 991 APS is a product from APS with manufacturer part number 991. The listing specifies brand APS and MPN 991 with EAN 4004133009912. Use this unit where exact APS 991 identification is required for compatibility, replacement, or inventory purposes. Ideal for technicians and procurement needing the specific APS 991 unit.