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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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