Based on this product's specifications, here are some alternatives and similar models
Telephone splitter Telecom Behnke REP-Kit 20-9930 Green
Summary description:
The Telecom Behnke REP-Kit telephone splitter allows you to connect multiple devices to a single telephone line. This green splitter is designed for easy installation and reliable performance. It is compatible with various telephone systems and ensures clear communication without interference. Ideal for home or office use, the kit includes one splitter per pack, making it a convenient choice for expanding your telephone network.