Based on this product's specifications, here are some alternatives and similar models
Intercom base station Saramonic WiTalk HUB SR3795 — full duplex intercom system
Summary description:
Saramonic WiTalk HUB (SR3795) is a base station for a full-duplex intercom system designed to manage voice communication between multiple users. As the central unit it routes audio, supports continuous two-way conversations without push-to-talk, and interfaces with compatible beltpack or headset devices. Intended for event production, broadcast, and live-crew coordination where reliable hands-free intercom is required.