Based on this product's specifications, here are some alternatives and similar models
PoE+ Injector Intellinet Gigabit High-Power 561518
Summary description:
The Intellinet Gigabit High-Power PoE+ Injector provides 30 W output power and supports IEEE 802.3at/af standards. It features a Gigabit Ethernet interface with data rates of 10/100/1000 Mbit/s and a maximum operating distance of 100 m. The injector is equipped with power protection features including over voltage, overload, and short circuit protection. Compact design with dimensions of 67 mm x 136 mm x 34 mm. Certified by FCC, CE, and UL.