Description
Signal night rings, doorbell events, time-clock tones, and alarms from a single contact closure with the Valcom V-9945A, a loud warble-tone horn with built-in tone generator, speaker, and volume control that activates on interrupted or continuous contact closure.
The Telecom Spot Expert Review
The V-9945A handles two common facility signaling needs in one unit — a warble tone for night ring alerts and a single steady tone for time-clock, doorbell, or alarm events — with a built-in priority rule: if both signals activate simultaneously, the single tone takes over. This prevents the awkward situation of a doorbell competing with a ring alert and producing noise that sounds like neither. Contact closure activation keeps it compatible with virtually any relay output, timer, or alarm panel, requiring no audio interface or programming. The built-in volume control lets the installer set the output level at the device to match the ambient noise in the space — important in spaces where "loud" is a requirement but "too loud" creates a distraction. The built-in tone generator and speaker mean this is a complete standalone alert unit, not a passive horn requiring a separate amplifier.
Key Features
- Warble tone mode for night ring and after-hours alerts
- Single tone mode for time clock, doorbell, and alarm signals
- Single tone automatically overrides warble when both signals are active simultaneously
- Activated by interrupted or continuous contact closure — compatible with any relay output
- Built-in tone generator, speaker, and volume control — complete standalone unit
Technical Specifications
| Model | V-9945A |
|---|---|
| Type | Single Tone / Warble Loud Horn |
| Activation | Contact closure (interrupted or continuous) |
| Tone Modes | Warble (night ring); Single tone (doorbell / time clock / alarm) |
| Priority | Single tone overrides warble when both activate simultaneously |
| Components | Built-in tone generator, speaker, and volume control |