SMT-455 “Voyager”- Universal Wi-Fi Thermostat – Available October 2026

RRP $545.60 inc.Gst

Available October 2026

SKU: SMT-455-Voyager

Out of stock

One Thermostat, Endless Possibilities

The Smart Temp SMT-455 Voyager is a powerful, next generation programmable thermostat designed to control almost any commercial or residential HVAC system. Built on more than 25 years of Smart Temp engineering experience, the Voyager combines advanced control, flexible configuration, and intuitive operation in a single modern controller.

Designed for Maximum Flexibility

With 5 onboard relays, 3 programmable universal outputs, and 3 universal inputs, the SMT-455 can be configured to suit a wide range of HVAC systems without the need for multiple thermostat models.

The Voyager supports:

  • 5-stage heat pumps with multi-speed fan control
  • Up to 4 stages of heating and cooling
  • Fan coil units
  • Hydronic heating and cooling systems
  • Open/Close valve control
  • 0-10V modulating valve control
  • Most popular inverter air conditioners using an optional protocol adapter

High-Level Communication

The SMT-455 communicates directly with Temperzone ™ UC7 or UC8 via RS-485 AB ModBus communication, providing high-level control and enhanced system functionality.

For even greater compatibility, an optional Multilink protocol converter enables communication with leading inverter brands including:

  • Daikin ™
  • Mitsubishi Electric ™
  • Fujitsu ™
  • Plus other supported inverter systems

Perfect for Commercial and Residential Applications

For commercial buildings, it includes features such as:

  • Commercial Start/ Stop time scheduling
  • After-hours run timer
  • Outside air economy cycle control
  • Configuration to suit Australian Standard AS 1668.2 and Building Code requirements

For residential homes, the Voyager provides:

  • Simple, intuitive touchscreen operation
  • Residential setback mode
  • Easy-to-use scheduling
  • Control Your Comfort from Anywhere

Built-in Tuya Wi-Fi allows you to monitor and control your HVAC system from anywhere using your smartphone or tablet.

 

Why Choose the Smart Temp Voyager?

  • Suitable for commercial and residential HVAC systems
  • Highly flexible I/O for virtually any application
  • Optional integration with major inverter brands
  • Built-in Wi-Fi with Tuya Smart Life app
  • Touchscreen interface with configurable user modes
  • Advanced scheduling and energy-saving features
  • Designed and supported by Smart Temp Australia

The Smart Temp SMT-455 Voyager delivers the flexibility of a building management controller with the simplicity of a modern thermostat, making it the ideal solution for today’s HVAC installations.

Features

  • Full Wi-Fi control with the free Smart Temp mobile app (Tuya based)
  • Works with Google Assistant and Amazon Alexa for convenient voice control
  • Modbus RTU and BACnet MS/TP communications
  • Optional BLE wireless room sensors
  • Heat pump, heat/cool, heat add-on, and 0-10V valve control
  • Compatible with all major inverter air conditioner brands
  • Single speed, multi speed, or DC fan control
  • Up to 5 compressor stages with automatic lead/lag operation
  • Up to 4 stages of heating and 4 stages of cooling
  • 4-inch full colour capacitive touchscreen
  • Commercial scheduling, residential scheduling, or manual operation
  • Built-in relative humidity (RH) monitoring with control outputs
  • Built-in occupancy detection
  • Simple, intuitive installer setup menu
  • Designed and engineered in Australia by Smart Temp
  • Comprehensive 3-year return-to-base (RTB) warranty
  • Backed by local Australian technical support

Specifications

Specification Details
Dimensions 135 × 95 × 26 mm
Weight 230 g
Packaging 158 × 107 × 35 mm, 300 g
Ingress Protection IP30
Power Supply 12 to 28 VAC/DC
Power Consumption 1.5 A maximum
Relay Outputs 8
Relay Rating 0.8 A per relay, 2 A total maximum
Analogue Outputs 3 × 0-10 V (10 mA maximum, protected)
Universal Inputs 3 (volt-free)
Sensor Type 10K NTC Type II
Display 4″ TFT colour capacitive touch screen
Wi-Fi 2.4 GHz IEEE 802.11 b/g/n (HT20)
Communications RS-485 (120 Ω end-of-line termination)
Operating Temperature 5°C to 35°C
Operating Humidity 5 to 95% RH (non-condensing)
Temperature Accuracy ±0.5°C
Temperature Resolution 0.1°C
Humidity Accuracy ±5% RH at 50% RH, 25°C
Storage Temperature -10°C to 90°C

Downloads

 

SMT-455 Voyager Brochure

SMT-455 Voyager Manual ver 1.34

 

 

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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.
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Callum Gigliotti
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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.
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Lyn Lumlops
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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! 🙌🏼
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Sam Umali
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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
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V S profile picture
V S
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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.
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Daniel Aronov profile picture
Daniel Aronov
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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.
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Andrew Sharp profile picture
Andrew Sharp
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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!
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Kevin McMahon
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Brilliant customer service. Great to deal with a great Australian company. Highly recommend.
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Lloyd Trenfield profile picture
Lloyd Trenfield
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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.
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Jeff Warke profile picture
Jeff Warke
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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.
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