Aico Ei428 RadioLINK Relay Module – Wireless Alarm Interface with Volt-Free Contacts – SKU: Ei428

The Aico Ei428 RadioLINK Relay Module (SKU: Ei428) is a versatile, mains-powered interface device designed to integrate external systems—such as telecare systems, strobe lights, or extraction fans—into a RadioLINK-enabled fire or carbon monoxide alarm network. Built with volt-free relay contacts, the Ei428 provides a signal output when any alarm in the network is triggered, enabling full-system responses in emergency situations.

Ideal for properties that require auxiliary alerting or specialist system triggers, this compact module is easy to install and fully wireless via RadioLINK, eliminating the need for hard-wired interconnection between alarms and external systems.

Key Features:

• Brand: Aico

• Model SKU: Ei428

• Power Supply: 230V AC mains with rechargeable lithium backup cells

• Backup Duration: At least 2 months (up to 10 years life expectancy)

• Relay Output:

  • Volt-free contacts (Normally Open or Normally Closed)

  • Rated up to 240V AC / 5A

• RadioLINK Wireless Interconnect

• Indicators:

  • Green LED – Mains power present

  • Red Flash (every 10s) – Low battery backup

  • House Code mode – Red LED flashes to indicate system pairing

• Compatibility:

  • Aico 3000 Series (via Ei3000MRF SmartLINK module)

  • 160e Series (via Ei100MRF module)

  • 140RC Series (via Ei168RC RadioLINK base)

  • All RadioLINK-compatible Carbon Monoxide alarms

• Supports up to 20 interconnected devices per system

• Wiring: Includes trunking and recess knockouts

• Mounting: Designed to sit under easi-fit/RadioLINK bases (or cover with Ei128COV)

• Certifications:

  • CE marked

  • Electrical Safety: BS EN 60065:1998

  • RF & EMC Compliance: EN300220-1, EN301489

  • R&TTE Directive compliant

• Dimensions: 140mm diameter x 27mm depth

• Weight: 220g (packaged)

• Operating Temp: 4°C to 40°C

• Humidity Range: 0–90% RH

• Warranty: 5 years

• Made in Ireland

Seamless System Integration for Safer, Smarter Environments

The Ei428 Relay Module enables automated external device activation as part of a comprehensive life safety system. When any alarm in the RadioLINK network is triggered—whether smoke, heat, or CO—the module activates its internal relay, which can then trigger auxiliary devices. This allows you to connect to:

• Strobe lighting systems for alerting deaf/hard of hearing individuals

• Extraction fans to remove smoke or dangerous gases

• Telecare alert systems for vulnerable or elderly residents

• Building Management Systems (BMS) or access control integration

Whether you're upgrading an existing alarm network or installing a new integrated safety system, the Ei428 gives you flexible control and enhanced response capabilities.

Use Case: Fire Safety Integration in Supported Living Homes

In a supported living complex, Aico 3000 Series alarms are installed in every flat and communal area. To further support residents with mobility or sensory impairments, the Ei428 Relay Module is installed and connected to strobe lighting and telecare systems. When any alarm is triggered, the strobe activates to provide visual alerts, and a signal is sent to the telecare system to notify on-site carers and off-site emergency responders instantly—dramatically improving reaction time and safety outcomes.

Easy Installation with Flexible Output Options

The Ei428 is designed for installer convenience. It features 25mm surface trunking knockouts and a centre recess knockout, along with a footprint designed to sit beneath existing Aico easi-fit bases. It can also be mounted standalone with the optional Ei128COV cover.

The volt-free contact output allows configuration for either 230V AC output or 24V external supply, giving complete flexibility for a wide range of AC or DC equipment.

Once installed, the unit must be House Coded with the rest of the RadioLINK system to ensure secure, exclusive communication.

The Aico Ei428 RadioLINK Relay Module (SKU: Ei428) is a powerful addition to any Aico wireless alarm network. It enables intelligent integration with external life-saving equipment, bridging the gap between detection and response. Designed for reliability, simplicity, and flexibility, it's an essential component for advanced domestic and assisted living fire safety solutions.