MDS SD Master Station 400-450 Simplex Redundant Protected 12-36 VDC Primary Power and 125 VDC Secondary Power with redundancy Serial Master Station with serial and ethernet data ports. MPRS4BRDNA1S2N14F1SNN is compatible with SD4 and 4710 radios with data rates up to 19.2 Kbps. Max range of 50 miles and sensitivity of -112. Temperature range of -22-140 degrees fahrenheit, power consumption of 5 A or 60 watts. Excellent performance in the face of interference or difficult signal paths. Network management software simplifies maintenance tasks, reduces network infrastructure management costs, and provides a non-intrusive means of maintenance and link monitoring. Redundancy options for protected 1+1 warm stanby configuration for reliable continuous use. Full duplex, half duplex and simplex modes.