MDS SD Master Station 400-450 No Duplexer (wired for external duplexer) Non Redundant, Non-Protected 36-75 VDC Serial Master Station with serial and ethernet data ports. MPRS4BNDN02S2N2NF1SNN 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.