SMS Lite (3G/4G)


The SMS Lite is a 4G SMS controller providing cellular remote control. It uses text messages to provide up to four people with status conditions, notifications and control options for its four switched inputs and two relay outputs.

It is operational within minutes with the minimum configuration requirement being the registering of a single cellular number to the SMS Lite.

All configuration is done by sending text messages – No software download is required.

You can check the status of the devices, receive notifications and manually control the outputs of the SMS Lite from your cellphone.

The SMS Lite is supplied with a small stub antenna but also requires a power supply such as our 230V Plug Pack or a DC power cable.

Optional high gain antennas suitable for external mounting are available.

SMS Lite alarm escalations


The SMS Lite controller supports 4G bands B1 (2100MHz), B3 (1800MHz), B5 (850MHz), B8 (900MHz), B28 (700MHz) and 3G bands B1, B5, B8.

Key Features

  • EASY TO USE – Once wired, the unit can be configured by text within minutes
  • REMOTE SWITCH – Switch connected devices on or off remotely
  • WIRELESS TECHNOLOGY – Monitor and control equipment remotely. No need for expensive cabling or travelling to site
  • 2 OUTPUTS – Outputs are controlled by sending the SMS Lite a text containing instructions
  • 4 INPUTS – Once configured you will receive a text each time any of the inputs turns on or off
  • SMS CONTROL & NOTIFICATION – Receive text messages with status conditions, notifications and control options for up to 4 people within cellular range
  • SHARED RESPONSIBILITY – Automatic alarm escalation if busy or no reply after 10 minutes
  • SUPPLY VOLTAGE MONITORING – Automatic DC supply voltage alarms
  • STATUS UPDATES – Check the status of your device from anywhere, anytime within cellular range
  • ENDLESS POSSIBILITIES – Versatile, reliable and suitable for most environments, including remote generator starting
  • LOW POWER CONSUMPTION – Ideal for Solar Power Installation
  • TELCO COMPATIBILITY – All NZ providers also Telsta and Optus in Australia
  • DIN RAIL MOUNTING OPTION – Optional DIN rail mount to simplify panel installation

The SMS Lite 4G SMS controller is the perfect choice for low cost, low power applications – please watch the short training video to see just how easy the set up is.


Product Documentation

User Guide – SMS Lite

Troubleshooting Guide – SMS Lite

User Guide v2.5 – For earlier SMS Lite with firmware up to v4.09

Brochure – SMS Lite 

Datasheet – SMS Lite 

SMS Lite Configuration Worksheet

Product Code: PD8640-4G

All QTech products may be subject to delivery advice when ordered.


  • Maximum Switching Current 2 Amps
  • Current Consumption 13mA
  • Input 12 – 24V DC (max 30V DC)
  • Dimensions L 112mm x W 76mm x D 25mm
  • Supports 4G bands B1 (2100MHz), B3 (1800MHz), B5 (850MHz), B8 (900MHz), B28 (700MHz) and 3G bands B1, B5, B8

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