Nemtek Druid Energizer Models Explained (13, 15, 18, 25)

If you are getting an electric fence installed, the energizer is the part that does the real work. It sends the pulses down the wires, watches the fence for cuts and shorts, and sounds the alarm when someone tampers with it. Most NagTech installations run on a Nemtek Druid energizer, and customers often ask us the same question: what is the difference between the Druid 13, 15, 18 and 25, and which one do I actually need?

This guide explains the Nemtek Druid energizer range in plain terms: what the joule ratings mean, single zone vs dual zone, which model usually suits which property, and the alarm and GSM features you can add. NagTech is the official Nemtek distributor in Pakistan, and we install these units from our offices in Lahore, Islamabad and Faisalabad.

What a Nemtek Druid energizer does

An energizer is the “brain and heart” box mounted on a wall near your fence. It takes mains power, charges an internal battery, and sends short high-voltage pulses through the fence wires. The pulse gives a sharp but non-lethal shock to anyone who touches the wire, which is the deterrent. At the same time, the energizer keeps checking the fence. If a wire is cut, shorted to the wall or pulled loose, it raises an alarm.

The Druid LCD range is Nemtek’s line of energizers with a built-in LCD screen. The screen shows the fence status at a glance, and its background colour changes so you can see quickly whether the fence is normal or in alarm. All Druid LCD models come with:

• A built-in alarm that monitors tampering and faults on both the live and earth wires
• A built-in 7Ah battery for back-up power during load shedding
• Lightning and power surge protection
• A gate alarm input, so the system can tell you if the gate is left open
• A walk test mode, which helps technicians check the fence section by section
• A control tag, plus an optional keypad for arming, disarming and programming

The Druid 13, 15 and 18 also use Nemtek’s Adaptive Power Technology (APT). In simple words, the energizer works out how much power your fence can safely carry before energy is lost through arcing, and adjusts its output to match. That means less wasted power and fewer false alarms.

Joule ratings: what the numbers mean

The joule figure tells you how much energy each pulse carries. More joules means the energizer can push a strong pulse down a longer fence, or a fence with more wire strands. It does not mean a more “dangerous” fence for a normal home. Every Druid is a pulsed, non-lethal energizer.

According to Nemtek’s own specifications, the output of each model (measured at a 500 ohm load) is:

A higher number is not automatically better for you. Choosing the right size keeps the system efficient. The length of your fence line, the number of strands and the type of wire are what really decide the model.

Single zone vs dual zone

Single zone (Druid 13, 15 and 18)

A single zone energizer treats the whole fence as one circuit. If any part of the fence is touched or cut, the whole system goes into alarm. For most houses this is all you need. The perimeter is short enough to check quickly, and one alarm for the whole boundary is easy to understand.

Dual zone (Druid 25)

A dual zone energizer splits the fence into two separately monitored and controlled sections. Each zone can be switched on or off, or set to high or low voltage, on its own. When there is an alarm, you know which side of the property it came from. This is useful when:

• The property is large, such as a factory, warehouse or farmhouse
• One side faces a road and the other faces a neighbour or open land
• You want to switch off one section for maintenance while keeping the rest live

Nemtek also designs the Druid 25 so that several units can be linked together into one bigger system, which suits housing societies and long industrial boundaries.

Which Druid model for which property?

We always confirm the model after measuring your running feet, but this is how the range usually lines up:

• Druid 13 LCD: a good fit for a typical house, such as a 5 marla or 10 marla home with a straightforward boundary wall.
• Druid 15 LCD: more energy for bigger homes, a 1 kanal house, or a boundary with more strands or more corners.
• Druid 18 LCD: the strongest single zone Druid. Nemtek positions it for long fence lines on homes, commercial and industrial sites where one zone is still enough.
• Druid 25 LCD: for large homes, factories, plazas and societies that want two independent zones and the option to network more energizers.

Not sure how many running feet your house has? Our guide on how much electric fence a 5 marla, 10 marla or 1 kanal house needs walks you through measuring your boundary.

Alarm, GSM and smart features

The alarm is what turns an electric fence from a simple deterrent into a security system. Every Druid has a built-in alarm, and you can extend it in a few ways:

Siren and strobe

A siren alerts you and your neighbours the moment the fence is cut or shorted. This is the basic setup on most homes.

GSM module for phone alerts

The Druid 13, 15 and 18 can be connected to a GSM module or an armed response radio. With a GSM module, the system can alert you on your mobile when the fence goes into alarm, even if you are away from home.

Connectivity on the Druid 25

The dual zone Druid 25 can connect over Wi-Fi or a mobile network, and can be controlled, monitored and programmed through Nemtek’s own connection tools. It can also work in alarm sensor mode, which lets it feed a separate alarm system.

Load shedding back-up

Because every Druid has a built-in battery, the fence stays live and monitored during load shedding and recharges when the power returns. How long the battery lasts depends on the fence load and the battery’s condition, so ask us to size the back-up for your area’s outage hours.

How to make sure you get a genuine Nemtek Druid

Copies of popular energizers do turn up in the market, so before you pay, check that:

• The serial label on the unit matches the box
• The unit shows the Nemtek LCD start-up screen and menus
• Your invoice names the exact model and serial number

Buying through the official distributor means genuine units and spare parts available in Pakistan. You can read more about the range on our Nemtek electric fence page.

What does a Druid energizer cost?

Energizer prices depend on the model and the number of zones. On our current price list, energizers start from Rs 50,000, and fence installation is priced separately at PKR 350 to 950 per running foot depending on the system and the site. The written quote names the energizer model so you can see exactly what is being installed. See the full breakdown in our electric fence price in Pakistan guide.

Frequently asked questions

Which Nemtek Druid model is best for a 1 kanal house?

A single zone Druid is usually enough for a 1 kanal house. We confirm whether the 13, 15 or 18 suits you after measuring your running feet and checking how many strands you want.

What is the difference between the Druid 18 and Druid 25?

The Druid 18 LCD is a single zone energizer with a 7.6 joule output. The Druid 25 LCD is a dual zone energizer with 2.4 joules per zone, so it monitors and controls two parts of the fence separately.

Does a Nemtek Druid work during load shedding?

Yes. Every Druid LCD model has a built-in 7Ah battery that keeps the fence running during power cuts and recharges automatically.

Can I get alerts on my phone?

Yes. The Druid 13, 15 and 18 can connect to a GSM module, and the Druid 25 can connect over Wi-Fi or a mobile network, so you can be alerted when the fence is tampered with.

Is a higher joule energizer more dangerous?

No. All Druid energizers send short, non-lethal pulses. A higher joule rating simply lets the energizer power a longer or more complex fence.

Get the right Druid for your property

The quickest way to choose between the Druid 13, 15, 18 and 25 is a free site survey. Our team measures your boundary, checks the wall and the number of strands, and recommends the model in writing with a clear quote. We serve homes and businesses from our electric fence team in Lahore, as well as Islamabad and Faisalabad.

Call or WhatsApp NagTech on 0311 1427111 (03-111-427-111) to book your free survey today.