Viking Electronics K-202-DVA Two-Input Voice Alarm Dialer
Overview
The Viking Electronics K-202-DVA is a fully programmable two-input, multi-number auto dialer built for both emergency and non-emergency message notification applications. Where a single-input dialer leaves gaps in coverage, the K-202-DVA handles two independent trigger inputs — each with its own stored message and its own list of up to seven phone numbers — so a single device can manage two distinct alarm zones or notification workflows without requiring separate hardware. It stores up to two minutes of total digital voice message content, runs on 120V AC or 12V DC power, and fits into a compact 5.25" × 3.6" × 1.75" enclosure that mounts easily in most utility or equipment spaces. This is a purpose-built commercial-grade notification device, not a general-purpose telephony product — it does one job reliably: detect an input, play a message, and dial down a list until someone answers.
For integrators already working with Viking Electronics telephone products, the K-202-DVA slots cleanly into existing infrastructure. It is also worth noting that if you are evaluating broader voice dialers and announcers, the K-202-DVA (often searched as K 202 DVA) represents Viking's two-input configuration in this product family.
Key Features
- Two Independent Inputs, Two Separate Message Banks: Each of the two inputs stores its own one-minute message and its own set of up to seven 32-digit phone numbers. This means input 1 can dial your facilities team when a door contact trips, while input 2 dials a different list when a temperature sensor activates — no shared dialing logic that causes one event to mask another.
- Seven Phone Numbers Per Input (32-Digit Capacity): Up to seven destinations per input, each supporting 32-digit dial strings. That is enough depth to sequence through on-call staff, backup contacts, and a central monitoring station before the dialer exhausts its list — practical for facilities that cannot guarantee a single contact will always answer.
- 2-Minute Total Message Storage at 64K Sampling Rate: Digital storage at a 64 kHz sampling rate keeps voice messages intelligible without analog tape degradation. Messages do not drift or degrade over time, which matters in installations where a dialer may sit dormant for months between activations.
- Programmable Qualifier Timer (1 Second to 18 Hours): The qualifier timer filters out transient or nuisance input triggers — you can set it anywhere from 1 second to 18 hours before the dialer activates. In a refrigeration monitoring application, for example, setting a 5-minute qualifier prevents a brief compressor cycle from generating a false alarm call.
- Programmable Resume Timer (1 Second to 18 Hours): The resume timer controls how long the dialer waits after a successful notification before it can be triggered again. This prevents call flooding if the triggering condition persists, and is independently configurable from the qualifier timer — useful when the reset and notification windows need to differ.
- 90 ms Input Detection Time: The 90-millisecond input detection response is fast enough to capture short-duration alarm pulses without missing activations from quick-trip dry contacts or brief sensor closures.
- CPC Detection (320 ms Minimum): Call Progress Control detection at 320 ms minimum lets the dialer recognize when a called party has hung up, so it can advance to the next number in sequence rather than leaving an open line or waiting out a full timeout.
- DTMF Timing (100 ms and 50 ms Modes): Selectable DTMF timing — 100 ms on/off or 50 ms on/off — accommodates differences in telephone network and PBX equipment response. If a destination PBX requires slower tone recognition, the 100 ms setting reduces missed digit errors during automated system navigation.
- Dual Power Input — 120V AC or 12V DC 500 mA: Accepts both 120V AC and 12V DC at 500 mA, which means it can run on panel-supplied DC power in an alarm control enclosure or on a standard AC outlet in a utility room. This flexibility eliminates the need for an external power adapter in most installations. Talk battery is 12V DC.
- 12V DC Talk Battery: The 12V DC talk battery support maintains line voltage during the call, ensuring the dialer sustains the telephone connection through the full message delivery without relying solely on line current from the telephone network.
- FCC Part 15 Class A and Part 68 Certified: FCC Part 15 Class A certification confirms the device meets commercial emissions standards. FCC Part 68 certification (registration number US:AAAEQ##Txxxx) and IC REN of 0.3 confirm direct telephone network connection compliance — no additional interface equipment required for PSTN connection in most jurisdictions.
- RC-2A and RC-3 Remote DTMF Controller Compatibility: The K-202-DVA is designed for full compatibility with Viking's RC-2A and RC-3 remote DTMF controllers with no conflicts. This matters if you need to remotely retrieve or review stored messages without physical access to the unit — a practical requirement in unmanned equipment rooms or remote monitoring sites. For installations that pair this dialer with recording or control accessories, see Viking Electronics accessories.
Integration and Compatibility
The K-202-DVA connects directly to a standard PSTN telephone line and requires no special interface hardware. Its FCC Part 68 registration and IC REN of 0.3 confirm direct network connection compliance. Compatibility with the Viking RC-2A and RC-3 remote DTMF controllers allows remote programming and message retrieval, which is particularly valuable in installations where the dialer is located in a remote or access-restricted space. Operating temperature range of 32°F to 90°F (0°C to 32°C) and humidity tolerance of 5% to 95% non-condensing covers most interior commercial and industrial environments, though it is not rated for outdoor or uncontrolled-temperature enclosures. For guidance on pairing this type of device into a broader security system, a pre-sales engineering review is recommended for multi-zone notification architectures.
If you are building a notification system that requires more than two input zones or longer per-message storage, review the broader Viking Electronics product line for higher-input-count models before committing to this configuration.
Frequently Asked Questions
Q: How many phone numbers can the K-202-DVA dial per input?
A: Each of the two inputs supports up to seven phone numbers, each up to 32 digits long. The dialer sequences through the list until a call is answered.
Q: Can the K-202-DVA be programmed remotely?
A: Yes. The K-202-DVA is designed for full compatibility with Viking's RC-2A and RC-3 remote DTMF controllers, enabling remote programming and message retrieval without physical access to the unit.
Q: What is the total message recording time on the K-202-DVA?
A: The K-202-DVA stores up to two minutes of total digital voice message content — one minute per input — recorded at a 64 kHz sampling rate for clear, stable playback.
Q: What power sources does the K-202-DVA accept?
A: The K-202-DVA accepts 120V AC or 12V DC at 500 mA, giving you the flexibility to run it from a standard outlet or from a panel-supplied DC power source. Talk battery is 12V DC.
Q: What is the warranty on the K-202-DVA?
A: The K-202-DVA carries a 2-year manufacturer warranty.
Q: Is the K-202-DVA suitable for outdoor installation?
A: No. The operating temperature range is 32°F to 90°F with 5%–95% non-condensing humidity — this is an indoor commercial device and is not rated for outdoor or uncontrolled-temperature environments.
The K-202-DVA is one of those devices that solves a specific problem cleanly — two independently triggered notification paths, each with a seven-number sequential dial list and a one-minute stored message, all in a unit that runs on either 120V AC or 12V DC. If you have ever had a single-input dialer on a site and found yourself wishing you could handle a second alarm zone without doubling your hardware footprint, this is the answer.
Technical Highlights:
- Qualifier Timer (1 sec – 18 hours): This is the feature that separates a well-designed dialer from one that floods your contacts with nuisance calls. Being able to set the qualifier anywhere from 1 second to 18 hours means you can tune the input debounce to match the actual physics of your sensor — a refrigeration unit that cycles briefly does not need to page the on-call tech at 2 AM.
- 64 kHz Digital Sampling: At 64 kHz sampling, recorded messages stay intelligible even after months of dormancy. Unlike analog solutions that drift or degrade with age, digital storage here means the message that plays during an actual emergency sounds the same as the day it was recorded.
- Dual Power Input: 120V AC or 12V DC at 500 mA means this unit drops into almost any installation scenario — wall-outlet in a server room, DC bus in an alarm panel enclosure, or a dedicated transformer. The 12V DC talk battery keeps the telephone connection stable through message delivery regardless of line current fluctuations.
Deployment Considerations:
- The RC-2A and RC-3 compatibility is worth planning around during the design phase — if the K-202-DVA will be installed in a locked or remote enclosure, provisioning for a remote DTMF controller at the time of installation avoids a return trip every time a message or phone list needs updating.
- Watch the operating temperature ceiling: 90°F (32°C) maximum means this device is not appropriate for un-air-conditioned equipment rooms in warm climates, attic installations, or any space that regularly exceeds that threshold in summer months. It is strictly an indoor, climate-controlled deployment.
For a two-zone refrigeration monitoring installation, a cold-storage facility entrance/egress alert, or a small commercial building where facilities and security need independent notification chains, the K-202-DVA is the right fit — compact, straightforward to commission, and eliminates the need for two separate single-input dialers on the same telephone line.
