Local Annunciation
Select from six ISA-18.1 standard acknowledge sequences.Communications
Use up to four serial ports to communicate using DNP3, Modbus, or SEL protocols, including Mirrored Bits communications.Time-Tagged Event Recording
Time-tag alarm events to the nearest millisecond. Report time-tagged messages with DNP3 or the SEL Fast SER protocol.Easy Installation
Save time with simple wiring and configuration. Print slide-in labels on any printer for easy installation or modification.Logic Processing
Create custom alarm conditions using programmable logic to combine inputs and communications data without custom wiring.Reliability
Meet the demands of your harshest environments. The SEL-2523 is designed to exceed stringent vibration, electrostatic discharge, electromagnetic interference, and temperature requirements.