... dissipation100-240 VAC1 1.2-0.6A50-60 Hz40W (maximum), 135.5 Btus2 /hrInput voltage, DC power supplyCurrentPower dissipation40W, 40- ... 72 VDC3 1.5-1.0A40W (maximum), 135.5 Btus/hrProcessor20-MHz Motorola 68EC030WAN interface options•2-wire ... serial (RJ-45)Operating environment32-104×F (0-40×C)Nonoperating temperature-40-185×F (-40-85×C)Operating humidity5-95%, noncondensingNoise ...