Expand your landline phone connections with the AMPCOM AMCAT3414BK Telephone Line Splitter. This 1-to-4 RJ11 crystal head splitter allows you to easily add more phones or devices to your existing landline setup. Featuring a durable ABS housing and gold-plated 6P4C connectors, this splitter ensures reliable, interference-free transmission for clear communication. Perfect for communication engineering, indoor setups, and a variety of devices like landline phones, fax machines, and dialers.