Rosslare Security AC425IP Multi-Advanced Scalable Networked

Features: Onboard TCP/IP networking 20,000, FIFO, history event log, when offline With MD-IO84 IO expansion, additional 8 inputs, 4 outputs With MD-D04 4-Door expansion, 4 readers with 4 inputs, 4 outputs Real-time clock keeps time for up to 2 weeks without power. No batteries to replace Optical tamper sensor for case and wall tamper detection