Based on this product's specifications, here are some alternatives and similar models
Wired? No: 2-channel wireless button transmitter ZAMEL RNK-02, key control for remote switching
Summary description:
ZAMEL RNK-02 is a 2-channel wireless button transmitter designed for remote switching and control. As a compact radio transmitter, it provides two separate channels operated via push buttons, enabling simple on/off or control commands for compatible receivers. Typical uses include remote control of lighting, gates, roller shutters, and other electrical loads where a small handheld or wall-mounted radio transmitter is required.