Viking Emergency Voice Module - EV-1

Viking Electronics EV-1 Emergency Voice Location Announcer

Overview

The Viking Electronics EV-1 is a phone-line-powered emergency voice location announcer designed for buildings and facilities that need a reliable, battery-free way to broadcast a pre-recorded message from a fixed location. Drawing power directly from the phone line at 32V DC / 25mA minimum, the EV-1 eliminates the maintenance overhead of battery-dependent devices — no dead cells at the moment you need the announcement to play. It stores up to 10 seconds of digital audio in non-volatile memory, so the recorded message survives a power cycle intact. If you're specifying life-safety voice annunciation for stairwells, elevator lobbies, or hazardous equipment zones, the EV-1 (often searched as EV 1) is worth a close look.

Compact at 2.8" x 1.4" x 4.7" (71mm x 36mm x 119mm) and shipping at 1.5 lb, it fits in tight enclosures or wall boxes without demanding a dedicated equipment room.

Key Features

• Phone Line Powered (32V DC, 25mA min): The EV-1 draws everything it needs from the telephone line itself — no local AC circuit, no power supply to specify, no UPS to budget. This dramatically simplifies installation in remote or hard-to-wire locations like stairwells and machine rooms where pulling power runs is expensive or code-restricted.
• 10-Second Digital Record Time: Ten seconds is enough for a clear, unambiguous location announcement: building name, floor, zone, and emergency instruction. For applications that need longer messaging, this constraint is the selection limiter — factor it early in design.
• Non-Volatile Memory — No Batteries Required: The recorded message is stored in non-volatile memory, meaning it persists through power loss without any battery backup. In a life-safety context, that removes an entire class of periodic maintenance tasks and failure modes.
• Dual RJ11 Connections: Two RJ11 jacks allow the unit to be looped into an existing phone line run rather than requiring a dedicated home-run wire. This loop-through topology keeps wiring tidy in multi-device installations.
• Compact Form Factor (2.8" x 1.4" x 4.7"): The slim profile fits inside standard wall enclosures and junction boxes. At 1.5 lb, it doesn't stress light-duty surface-mount boxes.
• 64K Equivalent Sampling Rate: The 64K-equivalent digital sampling rate delivers intelligible voice quality — sufficient for voice location announcements where clarity of words matters more than audio fidelity.
• Operating Range 32°F to 90°F (0°C to 32°C): Suitable for conditioned interior spaces. This is not a unit for unheated mechanical rooms that drop below freezing in winter — verify your installation environment falls within this range before specifying.
• Operating Humidity 5% to 95% Non-Condensing: Handles the humidity variation typical of commercial interiors. Non-condensing is the operative qualifier — avoid installations near steam pipes or uninsulated cold surfaces where condensation forms.
• Two-Year Limited Warranty: Viking's two-year limited warranty on the EV-1 provides a documented coverage period — useful for project closeout documentation and facilities management records.

Integration and Compatibility

The EV-1 connects to standard telephone lines via its two RJ11 jacks, making it compatible with conventional POTS-based phone systems and most analog voice communication infrastructure. It is designed to integrate into emergency communication systems where a pre-recorded voice announcement needs to trigger from a phone line event. Facilities specifying the EV-1 alongside Viking Electronics communication products can leverage a consistent wiring and power infrastructure across their emergency communication system deployment. For broader life-safety system design, consult your access control and emergency notification system documentation to confirm line-voltage compatibility with your PBX or POTS feed. When specifying power infrastructure for multi-device emergency communication layouts, review your power supply capacity alongside the EV-1's 25mA line draw.

Frequently Asked Questions

Q: Does the EV-1 require an external power supply or batteries?

A: No. The EV-1 is powered directly from the phone line — it requires 32V DC at a minimum of 25mA from the connected telephone line. No batteries, no local AC power supply, and no UPS are needed for the unit itself.

Q: How long a message can the EV-1 store?

A: The EV-1 provides 10 seconds of digital record time. This is sufficient for a concise location announcement but is a firm constraint — applications requiring longer playback need a different device.

Q: Will the recorded message be lost if power is interrupted?

A: No. The EV-1 uses non-volatile memory, so the recorded message is retained even if the phone line loses power. No batteries are required to maintain the stored audio.

Q: What connectors does the EV-1 use?

A: The EV-1 has two RJ11 jacks, allowing it to loop into an existing phone line run without requiring a dedicated wire home-run to each unit.

Q: What are the operating temperature limits for the EV-1?

A: The EV-1 is rated for 32°F to 90°F (0°C to 32°C). It is designed for conditioned interior environments — unheated spaces that drop below freezing are outside its rated range.

Q: What is the warranty on the EV-1?

A: Viking Electronics provides a two-year limited warranty on the EV-1.

James Everett

The EV-1's line-powered architecture is the detail that makes this unit practical at scale. Drawing 25mA from the phone line means you can deploy it anywhere you have a POTS feed — no separate power circuit, no battery inspection schedule, no entry in your preventive maintenance log. For facilities with dozens of stairwells or elevator lobbies, that calculus adds up fast. I've specified the EV-1 in multi-floor commercial buildings precisely because the non-volatile memory removes the "did someone check the batteries?" failure mode from the life-safety audit.

Technical Highlights:

• Non-Volatile Memory: Recorded message survives power loss with zero battery dependency — removes an entire maintenance task category from your facilities management program.
• Dual RJ11 Loop-Through: Two RJ11 jacks let you daisy-chain units on a single phone run rather than pulling individual home-runs to each location, cutting wiring labor materially on multi-device installs.
• Compact Footprint (2.8" x 1.4" x 4.7"): Fits in standard wall boxes without requiring a custom enclosure — keeps installation clean in finished commercial spaces.

Deployment Considerations:

• Verify your telephone line delivers at least 32V DC at 25mA at the point of connection — long cable runs with significant loop resistance can drop below the minimum threshold and cause unreliable operation.
• The 90°F (32°C) upper operating temperature limit is a real constraint in server rooms, boiler rooms, and any mechanical space that runs warm — confirm ambient temps before finalizing the installation location.

The EV-1 is best positioned in multi-floor commercial, healthcare, or institutional buildings where POTS infrastructure is already in place and you need consistent, maintenance-light voice annunciation at fixed locations like stairwells, elevator lobbies, and equipment rooms — without adding a separate power circuit to every device.