Smoke Alarm Surface, Remote Test/Hush Function, Relay Mounting Base for 240V, 2A

Smoke Alarm Surface, Remote Test/Hush Function, Relay Mounting Base for 240V, 2A

Smoke Alarm Surface, Remote Test/Hush Function, Relay Mounting Base for 240V, 2A

Item Number: 755RB

RRP (Inc. GST)



Qty UoM EAN Colour



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EU RoHS Directive

Under investigation


Package 1 Weight

165 g

Package 1 Height

35 mm

Package 1 width

150 mm

Package 1 Length

145 mm
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Frequently Asked Questions

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does the 755RB has voltage free contacts?

Yes it has 2A 250v AC rated NO & NC voltage free segregated contacts.


What size relay is in the 755RB?

The 755RB has a 2A relay.

Some of the key features are:
  • Integral 2A Isolated voltage free changeover relay
  • Control/activate third party devices (i.e. lighting, security, or home automation systems)
  • Dry contact input for remote test/hush functions from a momentary switch
  • Suitable for use with 755PSMA2 and 755RLPSMA2 smoke alarms

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Which type of switch should be used for the RemoteTest/Hush feature on the 755PSMA2 Smoke alarm?

Any 240V momentary switch, such as a 30MBP Bell Press Switch can be wired to either of the two new mounting bases 755RB or 755RFB up to 20m away. A relay can also be pulsed on momentarily via a security or home automation panel to activate the test/hush function. 

Can the Clipsal 755PFM have a remote switch fitted for test/Hush function?

Yes, but the optional mounting base 755RB (Mounting Base with Integrated 2A Relay and Remote Test/Hush Function ) or 755RFB (Mounting Base with Wireless Interconnect and Remote Test/Hush Function) must be added. The feature can be wired through any momentary switch. Once activated, normal operation resumes after about 10 minutes.

Can you use the 755RFB across circuits and phases?

Yes you can use the 755RFB across circuits and phases.

What is the “Global/Local” switch for on the rear of the 755PSMA2 smoke alarm?

This switch is specifically for use with the 755RB relay base only. It defines how the relay in the 755RB will operate. The smoke alarm can be configured so the relay in the base operates only when the local alarm is activated (Local switch position) or when any interconnected alarm activates (Global switch position). 

Which smoke alarm can be used with 755RB mounting base with integrated relay?

755RB relay base is suitable for use with 755PSMA2 and 755RLPSMA2 surface mount photoelectric smoke alarms.
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What are the best SD100 and SD200 smoke alarm replacements?

The photoelectric Clipsal 755PSMA4 is the replacement for both, even though the SD100 was ionisation type as we no longer supply that type. There is also available a 755RLPSMA4 with a rechargeable lithium backup battery. All current smoke alarm models are compatible and inerconnectable with previous versions. Also available are the 755RFB mounting base with wireless interconnect, the 755RB mounting base with integrated relay, and the 755PFM flush mount.

What is the 755RFB used for?

The 755RFB is a replacement base for the 755PSMA2 which is used to interconnect wirelessly to other smoke alarms.

What is the RF range for 755RFB base?

RF Range (line of sight) will be: 100m free air, 30m indoors

Will 755RFB relay base work with 755PSMA?

Unfortunately not, 755RFB is not suitable for use with 755PSMA. It is suitable for use with 755PSMA2 and 755PSMA4. 

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When interconnecting 755PSMA2 smoke alarms and using the new 755RB base do all smoke alarms need to have the RB base to be tested remotely?


Only one 755RB base is required to test the interconnected smoke alarms. Hushing of smoke alarms in alarm state  can only be done remotely if the alarm that has triggered the event is the alarm with the 755RB base , If this is not the case then the alarms must be hushed manually from whichever 755 unit has caused the alarm initially.
This is to ensure that alarms are not Hushed remotely without full inspection of areas containing all interconnected smoke alarms which may be sounding due to a genuine issue but not seen from the remote location .
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