02 October 2026

Do You Need a Professional to Install Water Tank Monitoring Accessories?

Usually not. Most wireless water tank monitoring accessories are built for DIY installation. Call a professional for mains wiring, pump control or hard-to-reach tanks.

Introduction

Knowing exactly how much water is in your tank used to mean climbing a ladder, lifting the lid and tapping the side. Today, a smart water level indicator does the job for you, sending live readings to a display in your home or an app on your phone.

That shift matters. Whether you rely on rainwater for drinking, run stock troughs across a farm or manage storage on a commercial site, running dry is costly and stressful. Accurate, real-time monitoring helps you spot leaks early, plan water deliveries, and keep pumps from running empty.

Once you have chosen a system, one practical question usually follows: can you handle the water tank monitoring accessories installation yourself, or do you need to call in a professional?

The honest answer is that it depends on what you are installing and where. In this guide, we explain what the common accessories are, how a typical installation works, which jobs are ideal for DIY and when it pays to hire a qualified installer or electrician.

What Are Water Tank Monitoring Accessories?

A water tank monitoring system is made up of a few core parts that work together. Accessories let you extend that system to suit your property, whether you have one rainwater tank or a dozen tanks spread across a farm.

The most common components include:

• Level sensors: The part that measures the water. Some systems use ultrasonic sensors mounted above the water, while others use a submersible pressure sensor lowered to the bottom of the tank. Smart Water's Tank Level Sender Complete Kit, for example, uses a 4m stainless steel (SS316) pressure sensor.
• Wireless transmitters (tank senders): Mounted on the tank, these send level data to your display or gateway. Long-range wireless technology such as LoRa allows these to work over considerable distances, which is ideal for tanks well away from the house.
• Solar panels and charging units: Many tank senders include an integrated solar panel and rechargeable battery, so there is no need to run power to the tank. A separate power pack can help where tanks are underground or heavily shaded.
• Displays and gateways: A wall-mounted display or WiFi gateway receives the signal and shows your levels, or passes them to a mobile app.
• Pump controllers: These automatically switch pumps on or off based on tank levels, for example to refill a header tank or stop a pump running dry.
• Repeaters and range extenders: High-gain antennas or repeaters help boost the signal where hills, trees or buildings block the line of sight.
• Multi-tank modules: Additional senders let you monitor several tanks from a single display or app. Smart Water systems, for instance, can monitor up to twelve tanks from one keypad, gateway or app.

Each of these accessories has different installation needs, which is why the DIY question rarely has a single answer.

How Water Tank Monitoring Systems Are Installed

Every product is slightly different, so always follow the manufacturer's quick start guide. That said, a typical water tank sensor setup for a wireless system follows these steps.

Step 1: Plan your layout

Work out where each tank sender will sit and where your display or WiFi gateway will go. Check the distance and line of sight between them, and confirm your home WiFi reaches the gateway location. Some gateways only connect to a 2.4GHz network, so check this before you start.

Step 2: Mount the tank sender

Fix the sender to the tank, usually on or near the lid or access hatch. For solar-powered units, position the panel in direct sunlight. In New Zealand and Australia, that generally means facing north.

Step 3: Install the level sensor

For a submersible pressure sensor, carefully lower the sensor to the bottom of the tank along with any excess cable. For ultrasonic sensors, mount the unit so it has a clear, unobstructed view of the water surface.

Step 4: Connect power or solar

Integrated solar units often need nothing more than switching on. Where there is not enough sun, such as underground or shaded tanks, connect the supplied power pack or an alternative charging source.

Step 5: Pair with your display or app

Pair each sender with your display, gateway or app, then enter your tank details, such as its dimensions or depth. This tells the system how to convert raw readings into litres and percentages.

Step 6: Test and monitor

Check that readings look sensible against a manual measurement. Smart systems often improve their usage predictions over time. With a Smart Water thank level indicator, after a couple of weeks, the system provides accurate indications of days to empty and average usage.

Can You Install Water Tank Monitoring Accessories Yourself?

In most cases, yes. Modern wireless systems are designed with DIY tank monitor installation in mind. Our Smart Water system is "a true DIY product" that is "very easy to install" with "no technical skills" required.

DIY is usually quick and straightforward when:

• You have a standard above-ground rainwater tank with a safe, accessible lid or hatch you can reach from the ground or a short stepladder.
• The system is wireless and solar-powered, so there is no cabling to run between the tank and the house.
• The display plugs in or runs on low voltage, or you are monitoring through a WiFi gateway and app.
• You are adding more tank senders to an existing system, as each one simply pairs with your current display or app.
• The tanks are within wireless range of your display or gateway, with reasonable line of sight.

If that sounds like your setup, a Smart Water starter pack is designed to get you up and running without calling anyone out.

When You Should Hire a Professional Installer

Some parts of a system go beyond simple DIY, either because of the law, safety or sheer complexity. Consider professional help in the following situations.

Hardwired mains electrical connections

Any accessory that connects directly to mains power should be installed by a licensed electrician. We advise that our Wall Mount WiFi LCD Keypad "should be installed by a qualified electrician as this is connected directly to mains power". In New Zealand, WorkSafe sets out strict limits on the electrical work homeowners can do themselves, and those rules do not cover rental properties or workplaces. If you are outside New Zealand, check your local regulations.

Integrated pump control

Wireless pump controllers are available in both low-voltage DC and mains-voltage AC versions. Wiring a controller into a mains-powered pump circuit is a job for an electrician. Even with low-voltage models, a plumber or pump specialist can help make sure the pump, pressure settings and float or cut-off logic all work together.

Complex multi-tank farm or commercial setups

Monitoring many tanks across a large property involves more planning: sender placement, signal paths, repeaters or high-gain antennas, and linking levels to pumps and troughs. An experienced installer can map this out, reduce dead spots and save you time.

High-elevation or hard-to-reach tanks

Tanks on towers, steep slopes or tall stands can mean working at height. WorkSafe's guidance on safe working with ladders and stepladders recommends keeping three points of contact and not standing on the top rungs. If the job needs more than a short, stable ladder, bring in someone with the right equipment.

Underground tanks or tank entry

Most installations only need access through the lid. Never climb inside a tank. Tanks can be confined spaces with limited oxygen, and entering them requires trained people and specialist procedures.

DIY vs Professional Installation: Key Differences

Use this summary to decide which route suits your property.

Factor	DIY installation	Professional installation
Skill level	Basic handyperson skills; follow the quick start guide	Licensed electrician for mains work; installer experience for complex systems
Time	Typically quick for a single wireless tank sender	Depends on scope; multi-tank and pump setups take longer
Cost	Hardware only	Hardware plus labour and call-out fees
Safety	Low risk for accessible, above-ground tanks	Essential for mains wiring, working at height or tank entry
System complexity	Best for single or small multi-tank, wireless, solar systems	Best for pump control, large farm or commercial networks
Compliance	No electrical compliance needed for battery or solar units	Electrician can certify mains-connected work

Many people take a hybrid approach: they fit the tank senders themselves and book an electrician only for the mains-powered display or pump controller.

Upgrade Your Water Monitoring System

For most homes and lifestyle blocks, water tank monitoring accessories installation is a straightforward DIY job. Wireless, solar-powered tank senders can be fitted without specialist skills, and extra tanks can be added as your needs grow.

The exceptions are clear. Anything connected to mains power, integrated pump control, large multi-tank networks and hard-to-reach or underground tanks is best handled by a qualified professional.

If you are ready to take the guesswork out of your water supply, Smart Water designs and manufactures smart water level indicators, wireless tank senders and pump controllers here in New Zealand. Built for homes, farms and businesses, our systems are designed for easy DIY installation and trusted by customers in New Zealand and around the world.

Explore our starter packs to find the right system for your tanks, or browse our manuals and FAQs for installation help.

Frequently Asked Questions

What tools do I need for installation?

Most wireless systems need only basic tools: a drill, a screwdriver, a tape measure and possibly a hole saw if you need to create a cable entry in the tank lid. You will also need your smartphone for app pairing and a stable stepladder if the lid is above head height. Always check your product's quick start guide for exact hole sizes and fixings.

How long does installation usually take?

For a single wireless, solar-powered tank sender on an accessible tank, installation is often completed within an hour or two, including pairing. Multi-tank systems, pump controllers and anything needing an electrician will take longer. Smart features such as days-to-empty predictions may take a couple of weeks to become accurate as the system learns your usage.

Will DIY installation affect system accuracy?

Not if you follow the instructions. Accuracy depends on correct sensor placement and entering the right tank details, not on who does the job. Lower pressure sensors to the bottom of the tank as instructed, give ultrasonic sensors a clear view of the water surface, and check your first readings against a manual measurement.

Is professional installation required for multi-tank systems?

Not necessarily. Adding extra tank senders to a wireless system is usually a DIY task, as each sender simply pairs with your existing display or app. Smart Water systems can monitor up to twelve tanks from one keypad, gateway or app. Professional help becomes worthwhile for large farm or commercial networks, tanks with poor signal paths, or pump controllers that need wiring into mains-powered pumps.