Need to remotely control equipment, locks, or devices over a standard phone line without complex programming or expensive hardware? The Viking RC-3 is a 3-output relay controller that lets you activate and manage up to three relays using nothing more than a touch tone phone call. The RC-3 answers incoming calls, verifies your 6-digit security code, and triggers the relay outputs you specify — all over an ordinary phone line. A built-in 12-digit alarm-activated pulse dialer means the unit can also initiate outbound calls when needed. Non-volatile memory keeps all your programming intact even through power outages, and status LEDs give you an at-a-glance view of relay states right on the unit. Programmable ring delay, relay time delays, and an optional 6-digit access code for enable/disable control give you a flexible, layered setup that fits a wide range of applications. When your needs grow, simply cascade up to three RC-3 units together to control up to nine relays from a single phone line. One power adapter handles all three units, keeping your installation clean and cost-effective. Our Expert Take: The RC-3 is a smart pick for facilities managers, automation integrators, or anyone who needs dependable remote relay control without investing in a full IP-based system. The cascade feature is especially useful in larger installations — instead of running separate phone lines or controllers, you can expand capacity incrementally as your needs change. If you need to control more than three outputs but want to keep things simple and analog, start with one RC-3 and add units as you grow. Key Features Controls 3 independent relay outputs via touch tone phone commands 6-digit security code required to access programming for protected remote control Optional 6-digit access code to enable or disable relays for additional control security 12-digit alarm-activated pulse dialer for outbound call capability Non-volatile memory retains all programming through power loss Programmable ring delay before the unit answers an incoming call Programmable relay time delays for precise timed output control Relay interrogation tones allow you to verify relay status remotely over the phone Cascade up to three RC-3 units to control up to nine relays on a single line Switchable 12V talk battery for flexible phone line compatibility Status LEDs for relays 1, 2, and 3 plus the answer relay One power adapter can power up to three cascaded units Technical Specifications Relay Outputs: 3 independently controllable relays Security Code: 6-digit programmable security code Access Code: 6-digit programmable enable/disable access code Pulse Dialer: 12-digit alarm-activated Talk Battery: Switchable 12V Memory: Non-volatile (retains programming without power) Cascade Capacity: Up to 3 units (9 total relays) Power: Single adapter powers up to 3 cascaded units
