MDS SD04P-ES-A 350-400 MHz (24-48 VDC) With 1 Antenna Port SD4P-MDAESNN51N Redundant Protected SD4 transceivers (Ethernet AES-128 Encryption and Managed) With 1 Antenna Port. Includes two SD-ES 400 MHz (24-48 VDC) With 1 Antenna Port managed radios each with 1 Ethernet Port and 2 Serial Ports (1 with 4710 Emulation). With 1 Active Ethernet Port and 2 Active Serial Ports. Programmable RS232/485. Includes authorization for remote management access, AES 128 Encryption, and VRC. Defaults to 4710 emulation mode. Supports packet and transparent modes and IP/Ethernet bridging. (Ethernet and Serial) With 1 Antenna Port 400 MHz (24-48 VDC) With 1 Antenna Port Licensed Managed Serial Licensed Radio 5 watt, 10v-30vdc with data rates to 19.2 Kbps at max range of 50 miles, sensitivity of -112 at 1x10-6 BER. with 1 Active Ethernet Port and 2 Active Serial Ports. High speed, up to 65 Kbps in 50 KHz channel. Programmable RS232/485. Includes authorization for remote management access, AES 128 Encryption, and VRC. Defaults to 4710 emulation mode. Supports packet and transparent modes and IP/Ethernet bridging. Temperature range of -140 to 158 degrees fahrenheit. The MDS SDxP incorporates two MDS SD transceivers and power supplies with automatic or manual switchover capability. On detection of a failure, the MDS SDxP switches immediately to the standby transceiver. The switchover occurs for selectable transceiver alarm conditions. Switchover also occurs when no valid packets are received in a time frame of 1–30 minutes, or upon loss of power to the operating radio. An internal backup battery is provided in AC-powered models for continued operation during a loss of primary power.