Based on this product's specifications, here are some alternatives and similar models
Wireless Doorbell BLOW DP-12 (range up to 100 m) model 17-101#
Summary description:
Wireless doorbell BLOW DP-12 (model 17-101#) designed for remote signaling at home or small offices. Operates with a wireless range up to 100 m, providing simple push-button activation and receiver alerting. Suitable for entryways, garages or auxiliary rooms where cable installation is impractical; easy to install and maintain for basic visitor notification needs.