SMT-2W5 Smart Two Wire Module

The SMT-2W5 from smart temp has been designed to provide a solution to when you don’t have enough wires on a project for a given task when running new wires is simply too time or cost prohibitive. Using a single pair of wires, the SMT-2W5 will provide you the same functions as R,C, G, Y1, Y2, W1 W2.

Every tradie should have one of these as Van Stock.

Downloads

Installer Manual

Features

Uses 2 standard 7/0.20mm wires
Powered by 24VAC
Provides 24VAC at up to 0.5Amp to power a thermostat
Provides 5 relays (single relay common Volt free)
Typical output use is R, C, G, Y1, Y2, W1, W2 with just 2 wires
Receiver module is DIN mounted
Sender module made extremely small to fit inside wall behind thermostat
Extremely low cost solution to a broken or missing 24V wires
Designed and built by Smart Temp Australia

This is how it should always be. Solid and reliable product, exceptional after-sales support, and quick, hassle-free customer service. Good old local Aussie business doing it right. Experiences like this are exactly why I try to support local businesses whenever I can. You get real people who know their products and stand behind what they sell. No faff, no drama, no being bounced between departments or waiting days for email replies in broken English. Just rock solid products backed by rock solid solid service. I'll happily come back here if I ever need another AC controller, and I'd absolutely recommend them.

Callum Gigliotti

Amazing customer service from people that believe in their product. I emailed on a Friday night requesting trouble shooting help. My email was answered overnight. Unfortunately the troubleshooting didn't work so I rang as advised and told to bring the front screen of the thermostat in. John advised that the 10 year old thermostat shouldn't be doing this, and it was replaced free of charge, regardless that it was no longer under warranty. Highly recommended for both product and customer service.

Lyn Lumlops

We've recently had dealings with Smart Temp and have been very impressed with the service. The team was helpful, professional, and easy to deal with from start to finish. A special thanks to the owner and the team for their assistance, advice, and excellent after sales support. It's great to work with people who genuinely care and are willing to help when needed. 💯 Highly recommended! 🙌🏼

Sam Umali

I'd to share a really helpful and positive experience with John K from SmartTemp. We recently bought a new house, with a SmartTemp Zone Touch pad (however we have no instructions for it). When the device started to behave differently, I was concerned and decided to contact SmartTemp via emai. John responded within hours, with an easy to understand explanation of the situation and how to adjust the device. I'm appreciative of the prompt, professional and appropriate advice from John and team. Thanks guys! Vaughn

V S

Best service you can get! Very happy with my thermostat which has great features and works well. More importantly, when the thermostat stopped working after a few years, the support team were very prompt and supportive and replaced it free of charge despite it being past the warranty period. Cannot recommend enough.

Daniel Aronov

I had an outstanding experience with Peter and the team at Smart Temp Australia. They successfully repaired my 20-year-old control system, taking the time to clearly explain the fault and physically show me the issue once it was removed. The level of transparency, technical expertise, and customer service was exceptional—easily one of the best service experiences I’ve had. I would highly recommend them and will continue to use Smart Temp Australia well into the future. Thank you for your, honesty, transparency, and trust. Will be back to upgrade the panels.

Andrew Sharp

I travelled from Inverloch to Wheelers Hill thinking I needed a new control panel for our 15 year old air conditioning system. Peter from Smart Temp said , ‘yes I can sell you a new one but let’s have a look at the old one.’ Ten minutes later and a few minor adjustments and it was as good as new. On top of that there was no charge at all. Exceptional service. Highly recommend!

Kevin McMahon

Brilliant customer service. Great to deal with a great Australian company. Highly recommend.

Lloyd Trenfield

I recently installed the Smart Temp SMT-450 Flexistat – WiFi Thermostat, and it has completely modernised my 20-year-old heating and cooling system. As a DIYer I’m capable, but I don’t do this every day — so when I hit a cooling issue after the upgrade, I reached out for help. The Smart Temp team were outstanding. They personally followed up, guided me through the diagnosis, and helped me identify the issue which was actually my mistake. They treated me with patience and professionalism, never making me feel rushed or embarrassed. Don’t bother with appliance stores. Go to an Australian-owned manufacturer who knows their products and stands by them. Smart Temp deliver real expertise, exceptional support, and genuine customer care. Highly recommended.

Jeff Warke

John at Smart Temp was extremely helpful when I broke my thermostat during renovation. He was able to sell me a replacement immediately, and he advised me on the best setting and even configured the thermostat for me. This is top-notch service and support.

Mick Sanders