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RS-485 bus galvanic isolator

The ACSP-RSI module is used for galvanic isolation of the ACSP-402 fire alarm control panel and APSP-402 repeater panel connected using the RS-485 bus. Owing to this, the repeater panel does not to be connected to the same protective earth circuit (PE) as the control panel. The module may be used for connecting a serial thermal printer which can provide printouts of events registered by the control panel. The module is an optional element of the ACSP addressable fire alarm system.

  • galvanic isolation of the RS-485 bus
  • RS-485 port for connecting the ACSP-402 / APSP-402 repeater panel
  • RS-485 port for connecting to a second ACSP-RSI module
  • capability to connect a thermal serial printer
  • 12...18 V DC power supply from the ACSP-402 control panel / APSP-402 repeater panel
  • removable terminal blocks
The actual appearance of the products may differ from the presented images. Product descriptions are provided in the web service for information purposes only.


general information manual
updated: 2023-03-14
110 KB

Technical Data

Current consumption
45 mA
Operating temperature range
28 g
Maximum humidity
61 x 51 mm

Information materials

3leaflet - installer

5product data sheet

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