TN775B / TN775D EPN Maintenance Board
The TN775B is a Maintenance Board that monitors power failures for the EPN cabinet in R7si/r or later.
- Monitors power failure signals in EPN cabinets
- Monitors clock
- Monitors and controls battery charger and power supplies
- Monitors air flow and temperature sensors
- Two serial links for communication for the Expansion Interface (EI) circuit packs, also provides an RS-232 interface for connection with an administration terminal
- 3-position switch to control emergency power transfer
- Equipped with a new DC to DC power converter
- One Year Warranty Included with Extended Warranty Options at Low Prices!