The RC-2A Remote Controller provides remote relay operation from any standard Touch Tone telephone. The controller is designed to be installed either locally or remotely. For local installations the RC-2A can be installed in series on any analog communications path, such as analog C.O. lines, analog PABX/KSU stations or Viking™s W-Series Door boxes. And will passively monitor for Touch Tone commands. Also known as -Remote Touch Tone Controller-VIKING RC-2A REMOTE TOUCH TONE CONTROLLER-Viking Security Accessories Remote Touch Tone Controller VK-RC-2A-Viking Electronics RC-2A Remote Touch Tone Controller-Viking Electronics VK-RC-2A Remote Touch Tone Controller