isolation unit smoke alarm

Smoke Alarm Isolation Unit Compatible With Clipsal Smoke Detectors Only

Catalogue Number: 756
isolation unit smoke alarm
RRP (Inc. GST)


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Range of product
Series 756
Product brand
Ambient air temperature for operation
0-50 °C
EU RoHS Directive

Frequently Asked Questions

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What is a 756 and what is its purpose?

The 756 is a Smoke Alarm Isolation Unit compatible with Clipsal Smoke Detectors only. The unit provides a set of isolated, normally open (N.O.) and normally closed (N.C.), changeover contacts permitting auxiliary devices such as sirens, strobes and/or security systems to be activated when the new 755 Smoke Alarm is in the alarm state.
The 756 may be used to provide connection of the 755 Smoke Alarm output to an external siren or strobe. It may also be used as an interface to Clipsal C-Bus®, Clipsal HomeSafe Security Systems, emergency lighting or other service.
The 756 is capable of operating correctly in the absence of mains supply and derives its power from the smoke alarm only when the smoke alarm is in the alarm state.

How many smoke alarms can be connected to a single 756 isolation unit?

Max of 40 smoke alarms can be connected to a single 756.

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Key Features

  • Changeover Contacts: 1xNormally Open (N.O.), 1xNormally Closed (N.C.)
  • Contact Rating: 10 A resistive and inductive, 250 V AC, 50 Hz
  • Interconnection Input: 6 V to 10V DC. referenced to Neutral
  • Supply Current: Alarm mode - 1mA minimum. Non-alarm mode (standby)
  • Maximum number of smoke alarms interconnected to a single 756 Isolation Unit: 40
  • Switching Delay: 20 seconds
  • Cables Accommodated: 2 x 2.5 mmsq
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Can the new smoke alarms fit onto the 755SMA, 755PSMA, SD100 or SD200 mounting base?

Yes, the new Gen 2 smoke alarms are 100% backwards compatible. They can clip straight onto the existing mounting bases. The new smoke alarms are also compatible with wired interconnection of all alarms mentioned above as well as the existing 756 isolated relay module. 

Is there a device that turns my lights on when my smoke alarm goes on?

Yes, if you have a 755PSMA2, you can use the 755RB Base which has a set of built in contacts or you can use a 756 Isolation unit which also carries out the same task.


Why are 9001KM38 listed twice, as resistor and full voltage light modules?

Is the 9001KM38 a resistor type or full voltage type of light module?

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Product Features

Both descriptions are accurate. They are both the same device but can be selected by either description depending on the application/preference.

Communicate M241 with 1756 ControlLogix controllers via Ethernet/IP

M241 to communicate with a 1756 ControlLogix controller via Ethernet/IP

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What is the replacement for a PDL 556

Use PDL 100MPIR + PDL 600RM relay

Is there going to be a 45A cooker switch in 40M? Been asked for 75A

There is not a specific 45A mech - it comes assembled as a complete switch plate in Iconic range.

What replaces the PDL 556 PIR sensor

Use the PDL 100MPIR + 600RM if required to switch higher loads

What is the IP rating for the 754HB2/180/60 sensor

IP44 rating, 754 series are suitable for outdoor use only

What is the part number for a 35amp single power point in the 600 Series range, or similar with standard pin configuration

Not available, you could use the range socket 45amp or Industrial Series (56 Series range)

Which 751 infrascan , can use 2 units to control the same load??

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