Aico Ei128RBU Hard Wired Relay Module with Battery Backup – Compatible with 3000/160e/140e Series – SKU: Ei128RBU

The Aico Ei128RBU Hard Wired Relay Module (SKU: Ei128RBU) is a versatile, mains-powered interface unit with integrated rechargeable lithium-battery backup, designed to enable external system activation in response to alarm signals from interconnected Aico smoke, heat, or carbon monoxide alarms. Whether you need to activate a warden call system, nurse call panel, BMS integration, or other external safety systems, the Ei128RBU provides a flexible and dependable solution.

Key Features

Mains Power & Backup

230 V AC mains supply

Rechargeable lithium cells (10-year life, 2 months backup)

Relay Outputs

Volt-free relay contacts supporting normally open (NO) and normally closed (NC) configurations

Rated up to 240 V AC / 5 A

Maintains signal until the alarm stops; automatically resets after 5 seconds

Interconnection

Supports up to 12 interconnected devices (including this relay)

Physical Specifications

Diameter: 135 mm

Depth: 20 mm

Weight (packaged): 265 g

Warranty

5-year manufacturer’s guarantee

Seamless Integration with External Alert Systems

The Ei128RBU Relay Module is designed for system integrators, electricians, and safety-conscious property owners seeking to extend alarm response capabilities beyond standard sirens. Upon activation of any alarm in the interconnected network, the relay triggers the external system—whether that be:

Telecare or warden call systems in assisted living or care homes

Alarm panel systems or mechanical ventilation

By supporting both AC and DC outputs, it adapts easily to a variety of external equipment across different property types.

Example Use Case: Fire Alarm Interface in Supported Housing

Installation

A supported living facility installs Aico smoke and heat alarms across 10 rooms and communal areas.

Integration

The Ei128RBU is installed under a hallway alarm and wired into the nurse call system.

Operation

When any alarm activates, the relay immediately signals the nurse call system, ensuring staff are notified and response times are minimised—enhancing occupant safety.

Reliability

Thanks to its battery backup, the system continues to function even during a power cut, maintaining full protection and compliance.

Flexible Installation & Operation

Cable Management

Trunking knockouts and a centre-recess knockout for flexible routing

Supplied surface-mount cover for neat installations

Mounting Options

Fits directly under compatible alarms or in a separate housing for 260RC CO alarms

Signal Output Modes

Continuous mode: Sustained activation while the alarm is active

Pulse mode: Momentary activation for systems requiring a quick trigger

The Aico Ei128RBU Relay Module (SKU: Ei128RBU) is a critical accessory for any hard-wired alarm network that needs to bridge alarm systems with auxiliary safety devices. Its dual-output flexibility, reliable backup power, and compatibility with Aico’s leading alarm series make it a dependable choice for homeowners, landlords, and facilities managers looking to enhance their fire safety infrastructure.