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Crestron® Green Light® 3-Wire Fluorescent Dimmer Expansion Module

At a Glance

Crestron® Green Light® 3-Wire Fluorescent Dimmer Expansion Module with emergency lighting control and built-in air gap relay

Proposition 65 Warning for California Residents

An advanced single-channel dimmer module controlled by Cresnet®. Supports dimmable 3-wire fluorescent ballast lighting loads. UL® 924 listed for emergency lighting control applications.

The Crestron Green Light® GL-EXP Series delivers a family of professional lighting control modules for Cresnet® or DALI® based lighting systems. Designed for easy installation on a wall or above a suspended ceiling, these modules offer a perfect solution for adding extra lighting zones to any system without requiring an additional lighting cabinet.The GL-EXP-DIMFDB-CN is a single-channel dimmer expansion module designed to control 3-wire electronic fluorescent dimming ballasts. Utilizing proprietary zero-cross filter technology, the GL-EXP-DIMFDB-CN compensates for line voltage and frequency fluctuations, providing superior immunity to power line noise and a dramatic reduction in lamp flicker.

Cresnet® Communications

The GL-EXP-DIMFDB-CN interfaces with a Crestron® control system via Cresnet. Cresnet is a simple 4-wire network bus that provides the communications backbone for a system of Crestron lighting dimmers, switches, keypads, shades, thermostats, and other devices.

Emergency Lighting Control

The GL-EXP-DIMFDB-CN is UL® 924 listed for use in controlling an emergency lighting load. In the event of a power failure, a contact closure from a power loss sensor (Crestron GLS-PLS-120/277, sold separately) activates the override mode in the GL-EXP-DIMFDB-CN to turn on the lighting load if it is off (assuming line power is supplied by a backup power source). The override dimming level can be preset to any value when commissioning the lighting system, so even if the load is already on prior to a power failure, it will change to the preset level when override mode is activated.

Plenum Rated NEMA Enclosure

The GL-EXP-DIMFDB-CN is designed to be mounted to a vertical surface and is UL 2043 compliant to allow for installation in an environmental air-handling space above a suspended ceiling. Conduit knockouts are provided on the bottom and lower sides of the unit. All connections are made via screw terminals behind the front cover.

Key Features

Single-channel dimmer for a 3-wire electronic fluorescent lighting load

Crestron® system integration via Cresnet®

Rated 16 Amps at 100-277 Volts AC

Zero-cross filter technology for reduced lamp flicker

Extreme stability under noisy power line conditions

Built-in air gap relay

Closure-activated override mode

UL® 924 listed for emergency lighting control

Surface mountable NEMA Type 1 enclosure

Mounts on a wall panel or above a suspended ceiling

UL 2043 listed for installation in an environmental air handling space