Based on this product's specifications, here are some alternatives and similar models
DECT FRITZ Repeater 100 DE wired DECT range extender, 230 V, 59×41×93 mm, 134 g
Summary description:
The DECT FRITZ Repeater 100 DE is a wired DECT range extender designed to improve DECT cordless phone coverage. It connects via mains (230 V/50 Hz) and features status LED indicators. Typical power consumption is 1.2 W. Compact dimensions (59×41×93 mm) and 134 g weight make it suitable for home or small office use to extend handset reach and signal reliability.