Hochiki SCI Sensor Mounting Base, Electronics Free, White YBV-R/4(WHT)

Overview

The YBV-R/4(WHT) is the white version of the SCI sensor mounting base, made from ABS. The ivory version is the YBV-R/4.

SCI stands for short-circuit isolation. As a rule, isolation splits a loop into sections so that one cable fault does not take out every device on it.

How it works

• Fourth terminal: the fourth terminal allows the SCI sensor range to operate with SCI functionality.
• Electronics free: the base has stainless steel contacts and no electronics, so it does not provide short-circuit isolation on its own.
• Remote indicator: the base is capable of driving a remote LED if required.

What the figures mean in practice

• 8 mm: the height of the base, a slim profile.
• 2.5 mm2 cables: the maximum wire thickness the square cable clamps take.
• 48 ~ 74 mm fixing centres: check the fixing points of the box or ceiling against this spread.
• -10 °C to +50 °C: the operating temperature range, with maximum humidity 95% RH non condensing (at 40 °C).

Installing it

Terminate the loop in the square cable clamps for secure and reliable cable termination, then fit the SCI sensor.

As a rule, check the loop for continuity and insulation before any sensors go in.

Planning your system

Confirm the panel supports Hochiki's ESP range before choosing SCI sensors for this base.

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Read the guide to commercial fire alarm systems for background on zones, loops and protocols.