Viking Electronics SR-IP SIP Loud Ringer with Visual Ring Indication and Relay Output
Overview
The Viking Electronics SR-IP is a SIP-enabled audible ringer and visual ring indicator built for commercial facilities where a standard phone ring simply won't cut through ambient noise — think warehouses, manufacturing floors, loading docks, or large open offices. Powered entirely over a standard PoE port, the SR-IP registers on your SIP PBX like any endpoint, rings loud at 93 dB SPL, flashes a visual indicator, and trips an onboard relay to fire external strobes or additional ringers simultaneously. No separate power supply, no transformer wiring, no parallel audio cabling — just an RJ45 run and a SIP extension assignment.
If you're building out a SIP intercom or alerting infrastructure and need verifiable ring delivery in high-noise environments, the SR-IP belongs on your short list.
Key Features
- 93 dB SPL Audible Output: At one meter, 93 dB is genuinely loud — roughly equivalent to a running lawnmower at close range. In a warehouse with forklift traffic or HVAC background noise, this is the difference between a call that gets answered and one that goes to voicemail forever. Don't spec a standard door phone ringer here expecting the same result.
- SIP 2.0 (RFC 3261) Network Compliance: The SR-IP registers as a standard SIP endpoint, which means it integrates with virtually any IP PBX or call manager that speaks SIP — Cisco UCM, FreePBX, 3CX, Grandstream UCM, and hosted platforms alike. No proprietary trunk required; assign it an extension and it answers ring groups, hunt groups, or direct calls like any other device.
- SPDT Relay Output (2A @ 30VDC / 250VAC): The onboard relay contact lets you wire in a Viking LPL-1, BLK-4, or SL-2 strobe light so every inbound call triggers both an audible and a visual alert. The same relay can trip an additional loud ringer like the Viking SR-1 to cascade alerts across a larger zone. At 2A, the relay handles standard 24VDC strobe loads without a separate relay driver.
- PoE Class 2 Power (under 6.5W): Drawing less than 6.5 watts, the SR-IP runs on 802.3af Class 2 — the most widely available PoE class on managed switches and injectors. You won't need to audit your switch power budget for this device, and a single PoE injector covers a standalone installation where no switch is nearby.
- G.711u / G.711a / G.722 Audio Codecs: G.722 wideband support means the ringer's alert tone can be delivered at higher audio fidelity when the PBX supports it — useful when tone clarity matters for distinguishing ring types (line 1 vs. emergency page). G.711 ensures backward compatibility with any legacy SIP infrastructure.
- -40°F to 140°F Operating Range: This spec opens up unheated equipment rooms, parking structures, cold-storage staging areas, and outdoor-rated enclosures as valid install locations. Most SIP endpoints are rated to 32°F at the low end — the SR-IP's -40°F floor is a meaningful advantage in northern climate deployments.
- Gel-Filled Butt Connector Terminations: The three included gel-filled butt connectors handle the relay output wiring without requiring weatherproof terminal blocks or field-applied sealant. For installations in damp or dusty environments, this is a practical detail that matters during commissioning.
- 100m (328 ft) Maximum Cable Run: Standard Cat5e/Cat6 PoE distance limits apply — 100m from switch port to device. Plan patch panel hops accordingly in large facilities; a PoE extender can push that further if needed.
- Viking Device Manager Support: Parallel programming, firmware updates, and polling are all handled through Viking's Device Manager utility — relevant when you're deploying multiple SR-IP units across a campus and need consistent configuration without touching each device individually at its mount location.
Integration and Compatibility
The SR-IP connects via a single RJ45 10/100 Base-T port and draws power from the same run — no secondary cabling needed. On the relay side, three gel-filled butt connectors handle the strobe or ringer wiring. Viking's relay contact is rated for both low-voltage DC (2A @ 30VDC) and line-voltage AC (2A @ 250VAC), giving you flexibility to drive a range of alert devices without a relay driver in between.
The SR-IP (often searched as SR IP) is compatible with Viking's own strobe and ringer accessories including the BLK-4, SL-2, LPL-1, and SR-1 — useful context when building a complete SIP alerting system across a facility. FCC Part 15 and Canada ICES-3 Class A regulatory compliance covers standard commercial installations in the US and Canada without additional approvals.
For facilities already running a managed PoE switch infrastructure, the SR-IP slots into existing port assignments with no power budget concerns. Viking Device Manager handles multi-unit provisioning, reducing per-device commissioning time on larger deployments.
Frequently Asked Questions
Q: What SIP PBX platforms is the SR-IP compatible with?
A: The SR-IP implements SIP 2.0 (RFC 3261), the industry-standard protocol supported by virtually all IP PBX systems including Cisco Unified Communications Manager, FreePBX, 3CX, Grandstream UCM series, and most hosted SIP platforms. If your call manager speaks SIP, the SR-IP registers as a standard endpoint.
Q: What strobe lights and external ringers can the SR-IP relay contact control?
A: Viking specifically references the BLK-4, SL-2, and LPL-1 strobe lights plus the SR-1 loud ringer as compatible relay-driven accessories. The SPDT relay is rated at 2A @ 30VDC or 2A @ 250VAC, so it can drive standard 24VDC strobes directly without an intermediate relay driver.
Q: Does the SR-IP require a separate power supply?
A: No. The SR-IP is powered entirely via PoE Class 2 (IEEE 802.3af), drawing under 6.5 watts from any compliant PoE switch port or injector. No transformer, no separate power run — one RJ45 cable handles both data and power.
Q: Can the SR-IP be installed in unheated or outdoor-rated enclosures?
A: Yes. The operating temperature range of -40°F to 140°F (-40°C to 60°C) supports cold-storage staging areas, unheated equipment rooms, and outdoor enclosures in harsh climates. Humidity tolerance is rated 5% to 95% non-condensing.
Q: What is the maximum PoE cable run to the SR-IP?
A: Standard IEEE 802.3af maximum cable length applies — 100 meters (328 feet) from the PoE switch port or injector to the device. For longer runs, a PoE extender is required.
Q: How is the SR-IP provisioned and updated in multi-unit deployments?
A: Viking Device Manager supports parallel programming, firmware updates, and polling across multiple SR-IP units simultaneously, reducing per-device configuration time in large-scale deployments.
I've deployed the SR-IP in a handful of manufacturing and cold-storage environments where the ask was straightforward: make sure an inbound SIP call gets noticed no matter what's happening on the floor. The 93 dB SPL rating at one meter is the number that matters here — not the brand name, not the form factor. At that output level, even with consistent HVAC and equipment background noise in the 70–75 dB range, you have real headroom. Pair that with the onboard relay driving a BLK-4 or SL-2 strobe and you've covered both auditory and visual alerting from a single PoE drop.
Technical Highlights:
- SPDT Relay (2A @ 30VDC / 250VAC): This rating matters practically — you can wire a standard 24VDC strobe directly to the relay terminals without an intermediate driver board. It also handles line-voltage AC loads up to 250VAC if your strobe or secondary ringer runs on that.
- PoE Class 2 (under 6.5W): Class 2 is the least demanding PoE class, which means you're never going to strain a switch power budget with this device. Even on an older 802.3af switch with a modest per-port budget, the SR-IP fits without negotiation.
- -40°F to 140°F Operating Range: This is the spec that makes the SR-IP viable in spaces where a typical SIP endpoint would fail — cold dock staging, unheated mechanical rooms, and enclosed outdoor equipment cabinets in northern climates. Most competitors rate to 32°F minimum.
Deployment Considerations:
- The relay wiring uses gel-filled butt connectors rather than a screw terminal block. In high-vibration environments like loading docks, verify the butt connector crimp is fully seated — a loose connection won't show up during commissioning and will fail intermittently under vibration.
- Device Manager is the provisioning tool for multi-unit deployments, but it requires network reachability to each SR-IP. Plan your VLAN and firewall rules before deploying at scale — discovering that your security VLAN blocks Device Manager traffic after mounting 20 units is an avoidable delay.
The SR-IP is the right call for cold-storage distribution centers and manufacturing facilities where you need an audible/visual SIP alert at an unattended station — specifically where the -40°F operating floor and relay-driven strobe integration matter more than audio quality or display features.
