8
GENERAL LAYOUT AND MAIN FUNCTIONS
Figure 1. UO-4S Layout
The UO-4S comprises the following hardware elements:
•
Tamper switch;
•
Beeper;
•
Seven information LEDs;
•
X
Р
2 Mode Select jumper;
•
X
Р
3 620 Ohm pull-up resistor jumper;
•
Two slots for primary (the lower one) and backup SIM cards;
•
25-input terminal block for connecting a power supply, RS-485 interface bus, a 220V monitoring
circuit, an operating loop, four alarm loops, three actuation devices, and a reader for reading
iButtons or Proximity cards;
•
Terminal blocks for connecting a microphone/speaker.
The main functions of the UO-4S are:
••••
Monitors conditions of four inputs (alarm loops).
••••
Monitors for 220 V mains power conditions (closing the contacts 5 (“
Кпит
”) and 6 (“0
В
”)
means a mains failure while opening of these contacts means restoring power conditions).
••••
Controls three relay outputs depending on conditions of alarm loops and communication chan-
nel.
•
Provides arming and disarming by means of iButtons or Proximity cards.
OPERATION PRINCIPLES
