SMT-455 “Voyager”- Universal Wi-Fi Thermostat

RRP $545.60 inc.Gst

Coming September 2026

SKU: SMT-455-Voyager

Available on back-order

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 â„¢ 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 â„¢
  • Mitsubishi Electric â„¢
  • Fujitsu â„¢
  • 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 1.33L

 

 

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