Viking C-500 2 Door Entry Phone Controller – Call Forwarding, Keyless Entry & Door Strike Control for Secure Door and Gate Access

Secure your entrances with the Viking C-500 2 Door Entry Phone Controller. Share a single phone line with two entry phones for two-way communication, automatic call forwarding, keyless entry codes, and powerful door-strike relays. Stackable for up to eight doors—perfect for homes, offices, and commercial buildings.

Our Expert Take: Our customers love the C-500 because it solves real-world problems fast. You keep your existing phone lines and analog phones, yet gain professional features like automatic call forwarding to cell phones, distinctive rings so you always know which door is ringing, and programmable keyless codes that let service techs in once and then expire. Stack four units for eight doors and you have enterprise-level coverage without enterprise-level cost or complexity.

Key Features

• Call forwarding built right in – If the inside phone doesn’t answer, the C-500 dials up to five programmed numbers (cell, office, or off-site) and keeps going until someone picks up—never miss a delivery or visitor again.
• Keyless entry for every door – Program up to six permanent codes, two one-time codes, and one toggle code per entrance so tenants, contractors, and guests get secure access without carrying extra keys.
• Two 5A door-strike relays – Activate door strikes or gate operators with simple one- or two-digit touch-tone commands from any phone; relays are SPDT for maximum wiring flexibility.
• Distinctive ringing and Caller ID – Know instantly which door is calling with custom ring patterns or programmable Caller ID/beep tones—no more guessing.
• Stackable design – Connect up to four C-500 units on the same line to control eight entry points—ideal for larger properties or future growth.
• Request-to-Exit and doorbell support – Two trigger inputs accept REX buttons, lighted doorbells, or timed switches for automatic entry-phone activation.
• Call-waiting tones – Entry calls still get through even when phones are in use.
• Remote programming and monitoring – Auto-answer lets you program the unit, check status, or listen at any entry phone from anywhere.
• Analog Station Mode – Works seamlessly with PABX systems or unused trunk ports.
• Chime and paging ready – Pair with Viking SLP-1 or SLP-4 for door chimes and whole-house paging.
  

Technical Specifications