Sounder Controller (Model 55000-8521IMC)
SOUND CONTROLLER (MODEL 55000-8521IMC)
The Sounder Control Unit (55000-8521IMC) is used to control the operation of a zone of
externally powered conventional sounders and VADs to report their status to a DEMCO’s fire alarm control panel.
- Allow sounders to be operated continuously or pulsed.
- Opto-coupled input is provided to monitor the state of the external PSU.
- Fitted with a bi-directional short-circuit isolator.
- Monitor the presence and polarity of the external PSU.
- Supplied with a backbox for surface mounting.
| Min Loop in Operating Voltage | 17V DC |
| Max Loop Operating Voltage | 28V DC |
| Switch-On Surge, Max. 10ms | 2.6mA |
| Quiescent | 1.95mA |
| Operating Temperature | –20°C to +70°C |
| Humidity (no condensation) | 0–95% RH |
| IP rating | 54 |
| Dimensions of Sounder Control Unit (surface mount) | 150 x 90 x 48 mm |
| Weight | 240g |