Description
Managing visitor access across dozens of tenants shouldn't require expensive proprietary hardware or a technician on speed dial. The Viking K-1900-3 gives property managers, HOAs, and multi-tenant building owners a straightforward, reliable way to let visitors call tenants and unlock doors or gates — all through a standard phone line.
At its core, the K-1900-3 is a compact auto-dialer controller that stores up to 250 tenant phone numbers and 250 keyless entry codes in non-volatile memory — no batteries needed and no lost programming during a power outage. When a visitor arrives, they place a call through any connected touch-tone phone; when the tenant answers, a simple keypress activates the built-in DPDT relay to release a door strike, magnetic lock, or gate. The system also supports ring-thru mode so staff can call the entry phone from inside, and a multi-number dialer mode makes it equally useful for kiosks, ATMs, or hotel reservation phones.
Built-in toll restriction on both touch-tone and pulse dialing — plus programmable 911/311 allow/restrict settings — means you stay protected against misuse without micromanaging the system. A log bus data output lets you monitor calls and entry events, and the whole unit is locally or remotely programmable from any touch-tone phone.
Our Expert Take: The K-1900-3 shines in mid-size apartment buildings and gated communities where you need real access control without the cost or complexity of a networked IP system. It pairs cleanly with Viking's K-1700-3 handsfree entry phone or the K-1900-8 wall phone with handset for a complete, professional front-door solution. One thing to keep in mind: the operating temperature tops out at 90°F, so if the controller itself will live in an unconditioned mechanical room or outdoor enclosure in a warm climate, make sure that space stays cooled — the entry phone out front handles the weather, but this unit prefers a protected indoor spot.
Key Features
- Stores up to 250 tenant phone numbers and 250 keyless entry codes in non-volatile memory — no batteries required
- Built-in DPDT relay (normally open and closed contacts) controls electric door strikes, magnetic locks, or gates — rated 5A @ 30VDC / 250VAC
- Compatible with Viking's K-1700-3 handsfree phone, K-1900-8 wall phone with handset, or any standard touch-tone phone
- Tenant-controlled buzz-in via simple relay activation code from their own phone — no extra hardware needed
- Programmable master keyless entry code plus five separate maintenance codes
- Ring-thru mode allows calls to the entry phone from inside the building
- Multi-number dialer mode supports kiosks, ATMs, and reservation phone applications
- Toll restriction on touch-tone and pulse dialing with programmable 911/311 allow/restrict
- Log bus data output for monitoring calls and entry events
- Locally or remotely programmable from any touch-tone phone
- Compact footprint (3.5″ W x 1.8″ H x 5.2″ D) fits easily in tight equipment spaces
- Designed, manufactured, and supported in the USA
Technical Specifications
- Power: 120V AC to 13.8V AC 1.25A UL-listed adapter (included)
- Dimensions: 3.5″ W x 1.8″ H x 5.2″ D (89mm x 46mm x 132mm)
- Operating Temperature: 32°F to 90°F (0°C to 32°C)
- Humidity: 5% to 95% non-condensing
- Talk Battery Output: 32V DC nominal
- Relay Contacts: 5A @ 30VDC / 250VAC (DPDT)
- Connections: Two RJ11 jacks + 10-pin screw terminal block
- DTMF Dialing Speed: Normal (120ms) or Fast (50ms)
- Shipping Weight: 1.65 lbs (0.74 kg)
- Certifications: FCC Part 68, FCC Part 15


