Merlin Stealth M28S Energizer

The Merlin Stealth Dual Zone energizer is a powerful range that can be used for residential to high-end security needs and is a cost-effective solution where more than one zone is required. Separation of the fence into two zones allows easy identification of the zone affected by fence faults or tampering. Smart design allows the maximum amount of energy to be transferred to the zone that needs it, yet the combined energy of the two zones will not exceed the legal maximum permitted. These energizers can be controlled by a tag and/or a keypad and can be programmed to offer customised solutions.

Test Report M28S
User Manual M28S
CE Certificate Merlin Stealth
Installer Manual Merlin M28S


  • 7.6 Joule output energy (dual zone)
  • Robust and flexible design for home and commercial security
  • Built-in alarm monitors tampering or faults on the high voltage and earth fence wires
  • Connectable to armed response radio or GSM module
  • Lightning and power surge protection
  • Intelligent power saving to extend battery life
  • Easy-to-use tag included for controlling the energizer
  • Optional keypad for controlling and programming the energizer. This allows the user to control the energizer remotely, with up to four keypads
  • Powered by 240V mains and includes built-in battery for back-up power
  • Two built-in gate alarm inputs to monitor if the gates are open or closed


Weight 7.6 kg
Enclosure size

L370 x W232 x D145mm


4.8kg excluding battery (7AH)
7.0kg including battery (7AH)

IP rating


Operating temperature

-10°C to 50°C

Operating humidity

< 80% non-condensing

Electrical supply voltage


Typical power consumption

27VA (normal operating conditions)

Standby Time

6hrs (fully charged battery)

Energy output

7.6 Joule (500 Ohms load)

Open circuit voltage


Stock CodeDescription
E-M28S/V1Merlin Stealth M28S Energizer