> Securiton NCU 900 FidesPort network communication unit
> Source: https://pap.fi/en/tuote/securiton-ncu-900/
> Full site in machine-readable form (in Finnish): https://pap.fi/llms-full.txt
> Pages in English: https://pap.fi/llms.txt

# Securiton NCU 900 FidesPort network communication unit

Product code 61354

Network unit for networking aspirating smoke detectors via RS-485 and Ethernet and connecting them to higher-level systems via Modbus or SNMP. 19-inch rack.

-   Up to 100 detectors
-   Modbus or SNMP to higher-level systems
-   19-inch rack, 1U (483 × 44 × 169 mm)

## Product description

NCU 900 is the network unit (FidesPort) of Securiton’s FidesNet system. It networks aspirating smoke detectors via RS-485 and Ethernet and connects them to external systems. Measurement data from the detectors can be forwarded, for example, to management systems in data centres. According to the catalogue, the connection to higher-level systems uses the Modbus or SNMP protocol.

The network can have up to 100 detectors. The RS-485 network on the detector side is up to 1,000 m long, and the Ethernet distance between participants up to 100 m. The NCU 900 is mounted in a 19-inch rack and powered with 18–30 V DC or PoE.

## Technical data

- **Product code:** 61354
- **Manufacturer:** Securiton
- **Manufacturer’s code:** NCU 900 (11-5000003-01-03)
- **Product group:** Aspirating smoke detection › Networking, control and software
- **Operating voltage:** 18–30 V DC or PoE (class 3)
- **Current consumption:** 200 mA (24 V DC)
- **Number of devices:** Up to 100 detectors
- **Protocols:** Modbus, SNMP
- **Network:** RS-485 (SIM 35) up to 1,000 m, Ethernet up to 100 m
- **IP rating:** IP20
- **Operating temperature:** 0…+50 °C
- **Material:** Sheet steel, aluminium
- **Colour:** Black front panel (RAL 9005)
- **Dimensions:** 483 × 44 × 169 mm (W × H × D)
- **Weight:** 830 g

## Documents

Original manufacturer documents (PDF).

### Technical datasheets

-   [Datasheet: NCU 900](https://pap.fi/liitteet/valmistajat/securiton__NCU_900_DS_T140742en_e.pdf) PDF · English · 415 kB
-   [Technical datasheet: NCU 900, RCU 700](https://pap.fi/liitteet/valmistajat/securiton__NCU_900_RCU_700_TD_T140741en_e.pdf) PDF · English · 2.4 MB
-   [Product catalogue (series): SecuriSmoke ASD 2026 (Securiton)](https://pap.fi/liitteet/valmistajat/securiton__SecuriSmoke_ASD_PC2026_F301en_c.pdf) PDF · English · 2.5 MB

### Brochures

-   [Brochure: FidesNet](https://pap.fi/liitteet/valmistajat/securiton__FidesNet_en_2022-05-24.pdf) PDF · English · 1.4 MB