Based on this product's specifications, here are some alternatives and similar models
UTP coupler DATACOM 4241, 2×RJ45 8P8C Cat5e, plastic
Summary description:
Inline UTP coupler DATACOM 4241 provides two RJ45 8P8C Cat5e ports in a compact plastic housing. Designed to join or extend Ethernet cables compatible with Cat5e performance, it supports standard 10/100 Mbps networks and is suitable for home, office or temporary installations. Simple to install, it offers a quick way to extend runs without tools or reterminating cables.