GUNMANSA Nemtek Energizer - Merlin 4J Incl Keypad Part No: EF51-2
NEMTEK

Nemtek Merlin 4J Energizer with Keypad for Medium Agricultural Fencing - EF51-2

3.7 Joule output energy (single zone)

Robust and flexible design for home and commercial security

Built-in alarm monitors tampering or faults on the high voltage and ea

Connectable to armed response radio or GSM module

Lightning and power surge protection

Intelligent power saving to extend battery life

Powered by 230V mains and includes built-in battery for back-up power

Built-in gate alarm input to monitor if the gate is open or closed

Gate chime available to alert that the gate

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R 3,627
Regular price
R 4,297
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16%
Flexible payment options Pay securely over time
Secure checkout with interest-free payment options
20 in stock

CPT | JHB | DBN
Description

The Nemtek Merlin 4J Energizer is a reliable and easy-to-use solution for medium-sized agricultural fencing applications. With 4 joules of power and an integrated keypad, this energizer provides simple control for your electric fence. Whether you're securing livestock or establishing boundaries for crops, the Merlin 4J ensures consistent power, making it ideal for farms that need efficiency and reliability without the complexity of more advanced systems.

The energizer features a user-friendly keypad, allowing you to easily adjust power settings and monitor fence performance. Designed for medium-scale farms, the Merlin 4J offers the perfect balance of power and convenience, ensuring your fence stays operational and effective with minimal maintenance. Built for outdoor conditions, it’s durable, easy to install, and offers a reliable solution for your agricultural fencing needs.

Key Features ✨

Feature Description
Power Output 4 Joules
Keypad Control Simple keypad for easy adjustment and monitoring
Durability Built for outdoor and farm use
Efficient Energy Reliable energy for medium-scale fencing
Ease of Use Quick setup and minimal maintenance
Versatile Ideal for securing livestock or crops

Technical Specifications 📊

Specification Detail
Part Number EF51-2
Power Output 4 Joules
Voltage Range 220V AC
Keypad Control Yes, for easy operation and adjustments
Dimensions (L x W x H) 320mm x 230mm x 150mm
Weight 4.3 kg
Warranty

Warranty

Our products are covered by a manufacturer’s warranty ranging from 6 months up to a lifetime, subject to the specific item. For detailed warranty information, kindly enquire with our support team.


Reviews

Reviews

Shipping

South Africa: 1-3 Days

Free Shipping Over R6000

International: 2-5 Days

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44

Let customers speak for us

from 1046 reviews
As advertised

Blank Gun Combo Add - On (10x9mm P.A.K Blanks + 1 Holster)

Pfano Makhado
The parts works for BMW X5 F15 30D,It is easy to

The parts works for BMW X5 F15 30D,
2015 model,
It is easy to install

The slip ring did not work it was short for the alternator.

vhutshilo siphuma
I received my package as expected and effortlessly

I've received my package as expected and effortlessly. I'm a happy client. 😊

Sibusiso Nkosi
Its awsome,and works 100%thank you,i highly

Its awsome,and works 100%thank you,i highly recomend it.thanks guys.

Wesley Fourie
The switch

The switch works 100% and has the advantage of offering two power input options: AC and DC.

Titus Sithole
Excellent Retay

Delivery was efficient, The gun looks and fells like a real gun. I'm ready to scare off those thugs during robbery.

Sibusiso Nkosi

I bought the Snug Lite 1-Port Home Charger with Type-C Cable (2.1A) in January 2026. The delivery was fast, and the charger is still working perfectly.

If the product is imported, delivery may take longer. However, if it’s a local product, delivery is usually much faster. I'm happy with their service.

Khosi
Top

Top Quality

Anonymous
Great, received my springs in perfect condition

Great, received my springs in perfect condition and fitted nice on the car

andile mhlanga
Easy to browse site and quality products

Easy to browse site and quality products.

Cluctch kit fits perfectly!!!!

Anonymous
it has landed it was the same one as in the

it has landed it was the same one as in the picture, thanks

Anonymous

Great service and fast turn around time. Had a small snafu with some stock of my order but they immediately remedied the problem when it was found.

Hendrik Kleynhans
Good quality

The product is good. I am happy with it and would recommend it.

remano bosch
Looks & Feel real

It feels like a real one and has a good sound.
And would definitely recommend it to someone who want to use it for self defence

Mpho Mtirara
Very good nice quality blank gun looks and feels

Very good nice quality blank gun looks and feels like a real gun and sounds even louder

Tyler Pieterse
SOLAR SYSTEMS

SOLAR SYSTEMS

POWER SOLUTIONS

POWER SOLUTIONS

ALARM SYSTEMS

ALARM SYSTEMS

ELECTRIC FENCING

ELECTRIC FENCING

GATE AND GARAGE

GATE AND GARAGE

NETWORKING

NETWORKING

CCTV

CCTV

INTERCOMS

INTERCOMS

REMOTES

REMOTES

ACCESS CONTROL

ACCESS CONTROL

FIRE ALARMS

FIRE ALARMS

HARDWARE

HARDWARE

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