Based on this product's specifications, here are some alternatives and similar models
Video signal converter AJA 12GM
Summary description:
The AJA 12GM video signal converter supports a maximum resolution of 4096 x 2160 pixels. It features SDI input and HD-SDI output interfaces, ensuring high-quality video transmission. The device operates on an input voltage range of 5 to 20 V, making it versatile for various setups. Its compact grey design makes it suitable for professional environments.