Red Heat Alarm Wireless Module

Red Heat Alarm Wireless Module

  • Certified to Australian Standard AS1603.3:2018
  • 10 year sealed lithium battery
  • 90 day money back guarantee
  • 5 year full product warranty
  • Free shipping for all orders over $200
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Red heat alarms are a high quality heat detector with excellent after sales customer support. They are designed to activate when the temperature reaches 55ºC – 59ºC in a room. Heat alarms are to be used as supplementary devices added to an existing smoke alarm network. Heat alarms are more suitable for locations which are susceptible to frequent nuisance alarms, such as kitchens (smoke from cooking) or garages (car exhaust fumes).

  • Add-on module for transmitting, receiving and programming RF signals
  • This module is installed inside the Red 240v mains powered heat alarm (model RHA240SL) allowing it to interconnect wirelessly
  • 90 day guarantee – change your mind for any reason? No worries! Return to us for your money back – no questions asked!
  • 5 year full product warranty
  • Model: RHARFM
  • Excellent after sales support – see our 5 star google reviews below!


Yuji Sekiya
Yuji Sekiya
Just wow. We needed to get our smoke alarm updated to meet the new requirements and googled, saw some reviews and rang him. I can guarantee the 100+ 5 star reviews are all genuine reviews. Not only he guided us to get the minimum required products that works for our needs, he gave me full knowledge and supporting documents to achieve some things I’ve told him I was planning to do. This is what a great customer service should be, nothing fancy, just a genuine supportive and prompt actions. Thank you Christian. I’ll definitely recommend for anyone after smoke alarms and related services.
richard siddall
richard siddall
Thought we had a problematic alarm 30minutes after my email they called after buisness hours resolved the issue over the phone. Excellent customer service!
Elaine Muncer
Elaine Muncer
So nice to deal with a company that understands when we make a mistake, WE purchased the wrong smoke alarms! but this company said thats ok we will refund you and send you the correct ones. Most companies would have said tuff luck but these lovely people have refunded us and were so understanding and polite I would recommend everyone to deal with them Thanks again to your team
Excellent customer service and a great product. Thanks again Christian!
Clinton Stevens
Clinton Stevens
Would buy from here again. Great service and quick delivery!
simon hunt
simon hunt
Great product, easy to install and excellent customer service.
Jocelyn McDonald
Jocelyn McDonald
Today, we received fabulous, friendly, and professional service from Christian of Photoelectric Smoke Alarms Australia. His service went above and beyond, since we did not buy the alarms from his company; I have since read his reviews and I wish I had bought them from him. As many have said, he knows his product but the customer service is second to none; truly outstanding! I would recommend this company to my friends and colleagues. Thanks again Joc and Steve
David & Leigh Stone
David & Leigh Stone
Great customer service !! Christian went up & beyond my expectations in assisting me with an urgent order,customer follow up was fantastic too. I will be using them again in the future for sure .
Skye Barrett
Skye Barrett
Christian assisted me with every step during this process from questions regarding the product and installation to the product arriving 36 hours after placing the order. The team went above and beyond! Thank you so much!!!
Great products, the interconnected smoke alarms were a breeze to setup and install.

Download RHARFM Datasheet

Shipping & Delivery


Our shipping flat fee is $14.95 for orders Australia-wide.

FREE SHIPPING! is automatically applied to all orders over $200

Estimated dispatch within 24 hours during business days only.


All orders are shipped from our QLD warehouse. Our delivery partner will email a tracking number which can be used to monitor delivery progress.

All orders require a signature upon delivery. If you are not home to accept delivery, a calling card will be left to make alternative delivery arrangements.

Additional information


Add-on module for transmitting, receiving
and programing RF signals

Transmission Frequency

433.92 MHz

Number of Device

Wireless Interconnect 40pcs heat alarm

Operating Distance

30m indoor use line of sight
100m in free field

Time delay range

2min for pairing

Type of installation



46mm x 28mm x 11mm


5 Year