Description
The Silent Knight SKE-450ZN4 is a 50-watt voice evacuation system with a built-in digital message repeater, power supply, and supervised microphone. Designed for fire and life safety applications, it provides reliable emergency voice instructions through 4 speaker zones. The SKE-450ZN4 supports both 25V and 70.7V operation and allows field programming or remote message download for maximum flexibility in new or retrofit installations.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Silent Knight |
| Category |
Fire Alarm Equipment |
| Part Number |
SKE-450ZN4 |
| Subcategory |
Voice Evacuation System |
| Output Power |
50 watts total |
| Speaker Circuits |
25V or 70.7V RMS, Class A or B |
| Zones |
4-zone splitter with All Call function |
| Inputs |
Two alarm inputs (reverse polarity and supervised dry contact) |
| Audio Storage |
Three programmable digital messages (up to 45 seconds) |
| Microphone |
Built-in supervised microphone |
| Digital Processing |
Integrated DSP for tone generation and control |
| Indicators |
LEDs for Speaker Trouble, Alarm, Mic Trouble, Ground Fault, Low Battery, Power |
| Cabinet Type |
Dead-front metal enclosure |
| Compliance |
UL Listed, CSFM Listed, MEA 429-92-E Vol. XI |
| Country of Origin |
United States |
| Dimensions |
3.46 × 14.50 × 26.42 in |
| Weight |
16 lbs |
Information About SKE-450ZN4
The SKE-450ZN4 is part of the Silent Knight SKE-Series Voice Evacuation Systems, engineered for effective and compliant emergency communication. It integrates seamlessly with fire alarm control panels and includes a four-zone splitter that allows Class A or B speaker configurations. The system offers dual alarm inputs, programmable audio playback, and a supervised microphone for paging and configuration. With built-in digital signal processing and tone generation, the SKE-450ZN4 ensures clear, consistent audio performance in commercial and institutional facilities.
Key Features:
- 50-Watt Output Power: Supports 25V or 70.7V speaker circuits for a range of installations.
- 4-Zone Splitter: Divides the amplifier output into four supervised Class A or B zones with All Call capability.
- Digital Message Repeater: Stores and replays pre-recorded or field-programmable evacuation messages.
- Supervised Microphone: Enables paging and local message recording directly through the control panel.
- Dual Alarm Inputs: Triggered via reverse polarity or supervised dry contact for flexible activation options.
- Programmable Audio: Messages can be updated via line input, onboard mic, or downloaded through the internet.
- Visual Indicators: Includes LEDs for speaker trouble, alarm, microphone trouble, low battery, and ground fault.
- Rugged Metal Cabinet: Dead-front design prevents tampering and protects internal electronics.
The SKE-450ZN4 delivers the reliability and precision required for clear, coordinated voice evacuation in life safety and fire alarm systems.
