Key Features:

• Adds 16 Wired Zones: Instantly expand your E27 Alarm Engine with 16 additional hardwired security zones. Ideal for attaching traditional wired sensors such as magnetic contacts, motion detectors, glass break sensors, heat detectors, and more. Each zone input is supervised for enhanced security.
• End-of-Line (EOL) Supervision: Supports EOL resistor supervision on all zone loops, with DIP switch selectable resistor values (1.0 kΩ, 2.2 kΩ, or 3.3 kΩ). This flexibility makes it easy to integrate sensors from other systems or adhere to specific installation standards. It also helps detect wiring faults or tampering by monitoring the circuit resistance.
• Up to 7 Expanders per System: Connect up to seven AEXIN modules on the E27’s 4-wire data bus. This allows scaling the system to a maximum of 128 hardwired zones (when combined with the panel’s onboard zones) – perfect for commercial sites or large homes with extensive sensor needs.
• Built-in Relay Output: Provides an extra Form C relay (SPDT) output on the expander board. You can program this relay to trigger external devices (such as sirens, strobes, door strikes, etc.) based on events, adding convenient automation or notification capabilities without using up the main panel’s outputs.
• Data Bus Powered: Hooks into the E27’s RS-485 four-wire data bus for power and communication. The expander is addressable and communicates with the Alarm Engine seamlessly, just like other bus devices. It also includes terminals for optional local power input and backup battery connection for remote installations, ensuring the expander and its sensors remain powered during an outage.
• Easy Wiring & Mounting: Equipped with removable plug-in terminal blocks that feature elevator-style wire clamps – making sensor wiring insertion secure and maintenance or module replacement simple. Diagnostic LEDs show status and activity, so you know the module is online and communicating. It comes with ELK-SWG mounting glides for quick installation in most alarm enclosures (vertical slide-in mounting.

Technical Specifications:

• Zone Capacity: 16 supervised hardwired zones per module (any zone can be configured for NO/NC sensors with the appropriate EOL resistor). Multiple modules can be combined to reach system maximum of 128 zones.
• Zone Supervision: Selectable EOL resistor values – 1kΩ, 2.2kΩ, 3.3kΩ (DIP switch selection). Supports normally closed or normally open contacts with EOL supervision.
• Relay Output: 1 onboard Form C (SPDT) relay rated at 4 Amps @ 12 VDC (for switching low-voltage devices). This relay can be activated via programmable outputs in the E27 control.
• Communication Bus: 4-Wire RS-485 Alarm Engine data bus (12 VDC power, A/B data lines, common ground). The module draws power from the bus or can optionally be powered locally for long runs. Current Draw: 85 mA nominal, 120 mA maximum.
• Power Connections: Screw terminals provided for AUX DC input (12 VDC) and battery (lead-acid backup battery) to support the expander’s operation independently if needed. These are useful if the module is mounted remotely or if the panel’s auxiliary power is fully allocated.
• Dimensions: Board size approximately 6″ x 3.25″ x 1″ (height). Compact form factor fits in ELK enclosures and many third-party can enclosures.
• LED Indicators: Visual LED feedback for Status (communication), Data transfer, and possibly zone fault indications (refer to manual for LED functions). This helps confirm proper bus communication and expedites troubleshooting.
• Installation Accessories: Includes a set of ELK-SWG mounting slides and screws for secure attachment inside enclosure rails. Documentation and setup instructions are provided for addressing and wiring guidelines.