Honeywell Home Intrusion 4209U Expansion Module 2-wire

Product Description

The HONEYWELL HOME INTRUSION 4209U is a 2-wire passive-end expansion module designed for fire and security control systems. It extends zone capacity on compatible alarm panels by adding supervised 2-wire passive-end (P/E) loop inputs. The small form factor makes it suitable for installations where panel space or enclosure space is limited. Licensed alarm technicians and fire system integrators typically install this module during new system builds or zone-capacity upgrades.

The 4209U is used in commercial and residential fire alarm and intrusion detection applications where additional 2-wire detector loops are required. Its passive-end design supports end-of-line resistor supervision, which is a standard requirement in supervised fire and security circuits. It is sold as a single unit and is classified as a fire control accessory.

Key Features

• 2-wire passive-end (P/E) loop input for supervised zone expansion
• Small form factor suited for space-constrained enclosures
• Designed for fire control accessory applications
• Sold as a single unit (each)

Compatibility

Designed as an OEM-style expansion accessory for compatible 2-wire fire and intrusion control panels that support passive-end zone expansion modules.

Installation Notes

Installation should be performed by a licensed alarm or fire system technician in accordance with NFPA 72 and applicable local fire codes. Power down the control panel before connecting or disconnecting any expansion module. Verify end-of-line resistor values match the panel requirements before commissioning the zone. Do not energize the module until all wiring connections are confirmed correct.