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SPECIFICATIONS PTT-SR3S
SERIAL PORTS (RS232): 5, 1 front (PC connection), 4 rear (GSM Modem and other devices).ANALOG INPUTS: 4, input level 0-2.56V with Zin=220Kohm; All inputs are equipped with R.F. filter, over voltage and reverse polarity protection. DIGITAL INPUTS: 8, optoisolated, voltage switched (1.8V to 15V), current switched (1mA to 15mA) or external contact using the internal pull-up resistor (Imax=3mA). Each input is indipendently configurable, over voltage and reverse polarity protected. DIGITAL OUTPUTS: 4, are galvanically isolated with relays. The current is 2A per contact max at 30Vdc, full contact available (NO/NC). MAINS SENSING INPUT: 1, The mains voltage is continuously monitored internally, the reading is done on the A.C. power socket. The threshold for abnormal mains voltage is user configurable, the default values are: start alarm Vmains <165V, end alarm Vmains >175V, with a tolerance of + -5%. MAINS POWER C.A.: 230Vac +/- 20% Freq. 50/60Hz POWER SUPPLY C.C.: alternative to mains. From 10V to 55V, reverse polarity protected. VISUAL INDICATIONS: -mains or power supply -extra serial port enabled -serial data running (rx/tx) from all ports. Pmax: 1.2W at 24Vdc. COOLING : no fan needed. OPERATING TEMPERATURE RANGE: -10..+40°C DIMENTIONS :Rack 19" 1U deep 105mm WEIGHT :1.2Kg |
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