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EDI-120 Control Retrofit
for Electronics Diversified Inc. (EDI) Mark VII Dimmer Racks


Discontinued. Superseded by EDI-60 Spring 2023.

EDI-120 Control Retrofit for Electronics Diversified Inc. (EDI) Mark VII Dimmer Racks

The EDI-120 is a next generation retrofit electronics package designed specifically for upgrading the EDI Mark VII performance dimmer racks making system replacement completely unnecessary. This full-featured, ETL Listed, state-of-the-art unit provides a direct digital interface to any of today's modern lighting communication protocols.

Designed to install in minutes with only a single screw driver, this compact and elegant package has been designed for longevity and reliability with the end-user in mind. Intuitive LCD user interface combined with a single modular design makes the EDI-120 extremely user-friendly and easily serviceable. Advanced next generation hardware and software designs reduce stand-by power consumption to less than 1 Watt, allowing for compliance with the International Energy Agency's "One Watt Initiative" for standby power consumption.

Full featured, hi-resolution dimming with ultra-fast response. Exclusive "lamp warming" techniques extends lamp life considerably. An environmentally and financially responsible solution that offers unsurpassed high performance in a matter in minutes!

ETL ApprovalJohnson Systems Inc. products are ETL listed and comply fully with UL508 and CSA22.2 No 184 electrical safety approvals. This Internationally recognized safety approval covers the entire assembly specifically for installation into an existing UL approved enclosure (OEM rack) and in no way compromises the electrical safety of the overall system. Official documents available on request.

  • Compatible with O.E.M. dimmer rack wiring for fast easy installation. Installs in minutes.
  • Unique "lamp warming" feature lowers the dimmer to cold lamp filament by up to 70% resulting in significantly increased lamp filament life and lower cost of ownership.
  • 120 hi-resolution digital outputs with individual dimmer profile selection.
  • Dual opto-isolated DMX512 inputs with built-in protocol manager.
  • Analog and dedicated dry contact BMS inputs for interface with HVAC, security and fire alarms.
  • "Load Shed" inputs for power management, occupancy sensor or photocell interface.

  • LCD user interface for ease of set up and monitoring. Site programmable via a user-friendly, intuitive and self-prompting menu structure. No laptop computer or special software is required!
  • Dimmer rack thermal shutdown protection.
  • 24" x 3.5" (2RU) rack mount modular design.
  • Optional Ethernet node supports a wide range of communication protocols including Net2, Strand, ArtNet, ACN (Net3) and Pathport.
  • Removable memory dongle permits remote/off site backup of configuration data and ease of future firmware upgrades.
  • Up to 10 year product warranty available!

This product is available through
authorized JSI dealers only.

Please contact our factory for pricing.

PDF File Datasheet (PDF)
PDF File Manual (PDF)
Web Page File Specifications
PDF File EDI-120 Rear Connection Detail (PDF)
PDF File EDI-120 Dimensional Drawings (PDF)


Go Green

These products are energy efficient and consume less than 1 watt. Compliance with the International Energy Agency's "One Watt Initiative"