WPS-2800 series
| WPS-2800 series | |
 All ten models side-by-side. | |
| Company | Whelen Engineering |
|---|---|
| Produced | 1991-2006 |
| Type | Electronic |
| Sound output | 108-126 dBc at 100 feet |
| Wattage | 400-4000 Watts |
| Preceded by | WPS-2700 series |
| Succeeded by | WPS-2900 series |
| Documentation | Manual Product sheet |
The WPS-2800 series was a line of electronic, omnidirectional sirens produced by Whelen Engineering. They were an update to the WPS-2700 series, supporting more cells in a stack.
They can be identified from the WPS-2700 series and WPS-2900 series by their large, visible screens close to the outer edges of the cells.
Controllers
The very first WPS-2800s used the same analog ESC-864 controllers utilized by their predecessors. These were soon replaced by digital ESC-864s running at a 465 hz base frequency. Towards the latter half of the series' production, the 864 was succeeded by the ESC-2020, which used 435 hz as a base frequency. These controllers soon became infamous for reliability issues and clipping tones, and soon before the 2800 series was replaced, a new revision of the 2020 appeared, using a 560 hz base frequency. Not many of these were installed with 2800s, as they were soon replaced by the WPS-2900 line.
Models
| Model | Image | Output | Drivers | Notes |
|---|---|---|---|---|
| WPS-2801 |  |
108 dBc | 1 | |
| WPS-2802 |  |
114 dBc | 2 | |
| WPS-2803 |  |
115 dBc | 3 | |
| WPS-2804 |  |
118 dBc | 4 | |
| WPS-2805 |  |
119 dBc | 5 | |
| WPS-2806 |  |
121 dBc | 6 | |
| WPS-2807 |  |
123 dBc | 7 | |
| WPS-2808 |  |
124 dBc | 8 | |
| WPS-2809 |  |
125 dBc | 9 | |
| WPS-2810 |  |
126 dBc | 10 |
Notable systems using this model/series
- Columbus, Georgia
- Donald C. Cook Nuclear Generating Station
- Little Rock, Arkansas
- Oklahoma City
- St. Louis, Missouri
- Surry Power Station
- North Anna Power Station
- Tooele Chemical Depot
- Columbus, Indiana
- Denmark
- San Onofre Nuclear Generating station
