Merlin Stealth M28S Dual Zone Electric Fence Energizer 8 Joule

The Merlin Stealth M28S Dual Zone Electric Fence Energizer is a high-performance security solution engineered for advanced perimeter protection across residential, commercial, and industrial properties. Delivering up to 8 Joules of maximum output energy, this energizer provides robust dual-zone security with smart energy allocation for optimal fence performance. Designed for precision and control, the M28S allows fast identification of faults, reduces downtime, and supports remote access via keypad or tag. Its intelligent features, power-saving capabilities, and backup battery support ensure uninterrupted, dependable operation in demanding environments.

Product Features

Dual-Zone Monitoring

Each zone can be independently monitored, controlled, and diagnosed. This allows for targeted response to faults or intrusions and improved overall system reliability.

High Output Energy

With 7.6 Joules of output energy (combined dual-zone), the M28S delivers powerful electric pulses capable of securing large and high-risk areas effectively.

Built-In Alarm and Tamper Detection

Includes a built-in alarm system to monitor tampering, voltage loss, or grounding issues. Helps detect and deter sabotage attempts in real time.

Smart Energy Distribution

Automatically transfers maximum energy to the affected zone during a fault or intrusion event while maintaining safety compliance by limiting total energy output.

Tag and Keypad Control

Energizer can be armed/disarmed using an included tag or optional keypad. Up to four keypads can be connected for convenient remote control access.

Lightning and Surge Protection

Equipped with surge suppression components to protect the unit from lightning strikes and electrical surges, ensuring longer operational life.

Backup Power Support

Powered by 240V mains with a built-in rechargeable battery backup (7AH), providing up to 6 hours of standby power during outages.

Auxiliary Inputs for Gate Monitoring

Two built-in inputs monitor gate status, triggering alarms if the gate is opened unexpectedly, enhancing entry point security.

Expandable Multi-Zone Capability

Supports integration into a broader multi-zone security system, allowing for future scalability without replacing existing components.

Product Specifications

• Maximum Output Energy: 8 Joules
• Effective Output (500 Ohms Load): 7.6 Joules
• Zones: Dual (2 independent zones)
• Open Circuit Voltage: 9,300V
• Alarm Inputs: 2 auxiliary inputs for gate monitoring
• Power Supply: 240V AC mains
• Backup Battery: 12V 7AH rechargeable (included)
• Typical Power Consumption: 27VA
• Standby Time (Battery): Up to 6 hours
• Enclosure Dimensions: 370 mm (L) x 232 mm (W) x 145 mm (D)
• Weight (Without Battery): 4.8 kg
• Weight (With Battery): 7.0 kg
• IP Rating: IPx4 (splash resistant)
• Operating Temperature: -10°C to 50°C
• Humidity: <80% non-condensing