Relay unit BR4-I (BR4-I) is designed to control sound and light signalling devices, various automation devices within the integrated security system "Strelets-Integral". The BR4-I uses ISB S2 network interface for data exchange. BR4-I version 2 is designed to transmit notifications to the centralised control panel.
BR4-I has an external fault monitoring input ("FLT"), the state of which is controlled by the external circuit resistance as follows: resistance within 4 to 7 kOhm - "Normal" state; resistance of 10 kOhm and more or 2.8 kOhm and less - "Fault" state. BR4-I is powered from an external DC source with voltage of 9-27 V with the possibility of controlling the main and backup power supply. The average service life of BR4-I is not less than 8 years.
Overall dimensions of BR4-I are 210×143×38 mm. The weight of BR4-I is not more than 0,3 kg.
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