Based on this product's specifications, here are some alternatives and similar models
Access control reader UBIQUITI UniFi Access Reader G2 — 10/100/1000 Mbps Ethernet, 48 V DC, 0.7 W speaker, black
Summary description:
UBIQUITI UniFi Access Reader G2 is an access control reader for door entry systems. It supports Gigabit Ethernet (10/100/1000 Mbps), operates from 48 V DC and consumes up to 5 W. Integrated speaker power is 0.7 W. Compact dimensions (93 × 40 × 36.5 mm) suit wall- or panel-mount installations for offices, apartment buildings and secure facilities.