Incorporated in 1956 by Frank R. Justin, Jr. in San Gabriel, California, Justin Inc. has manufactured electric transformer and control assemblies for use in the green industry for over nearly 50 years.  Our current location in South El Monte, California, has housed our home office and our ever expanding manufacturing facilities since 1964.  All Justin transformers are UL listed and cUL approved for Canada and proudly manufactured in the U.S.A.

Designed for Landscape Lighting, our Garden Light Professional (GLP) models are available from 300 to 1200 watts with NEMA 3R rain tight powder coat enclosures. Our Multitap Professional (MTP) models feature stainless steel enclosures with multiple voltage outputs of 11-15 volts.  In addition to our Low Voltage Landscape transformers, we provide various transformer accessories such as in-ground transformers, plug-in timers, photocells kits, lamp saver voltage controllers and low voltage dimmers.

Serving the architectural and track lighting market, our General Purpose Step-Down transformers feature 12 and 24 volt outputs housed in indoor/outdoor enclosures. Features include outputs from 100 to 1560VA and wiring provided for three output voltages.

In support of the LED Sign and Decorative lighting industry, our AC Class 2 transformers consist of 60 through 240 watt models with 12 and 24 volt AC output. Features include AC single circuit Class 2 transformers and AC multiple circuit Class 2 Power Units.  Complimenting our AC line are our Class 2 DC Regulated Power Supplies.  These LED Drivers, LED Power Supplies feature Single and multiple models available in 36 through 300 watt models, 12 and 24 volt regulated DC.

In house operations include semi-automatic coil winding, and complete fabricating and electromechanical assembly capability.

ISO 9001 Certification in Process, RoHS compliant.