Based on this product's specifications, here are some alternatives and similar models
DECT base station Snom M400
Summary description:
The Snom M400 DECT base station offers a maximum range of 300 m and supports various network protocols including DHCP and NTP. It operates on frequencies of 1880 - 1900 MHz (EU) and 1920 - 1930 MHz (US). With dimensions of 90 x 36 x 112 mm and a weight of 170 g, this compact device ensures secure communication with TLS encryption.