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 60 years. Our current location in South El Monte, California, has housed our office and expanding manufacturing facilities since 1964. Justin transformers and power supplies are UL Listed/Recognized and or cUL approved for Canada and proudly manufactured in the U.S.A.

Designed for Landscape Lighting, our Bluetooth Control JSST models are available from 75 to 300 watts with stainless steel enclosures. Our Multitap Professional (MTP) models feature stainless steel enclosures with multiple voltage outputs of 11-15 volts. Our Garden Light Series (GL) models are available in 100 and 200 watts with stainless steel enclosures with 12 and 15 volt taps. These units are designed for all LED lamp types. In addition to our Low Voltage Landscape transformers, we provide various Transformer Accessories such as in-ground transformers, plug-in timers, low voltage dimmers, and electronic photo controls.

Serving the architectural and track lighting market, our General Purpose Step-Down transformers feature 12 and 24 volt outputs housed in NEMA 3R indoor/outdoor enclosures. Features include outputs from 100 to 1000VA 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 360 watt models with 12 and 24 volt AC output. Models 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 dimmable LED Drivers / LED Power Supplies feature single and multiple circuit models available in 36 through 288 watt models, 12 and 24 volt regulated DC. In addition to our Magnetic DCR units, our new Class 2 Solid State Dimmable SSD Drivers include single and multiple circuit models available in 36 through 336 watts.

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

ISO 9001 Certification in Process, RoHS Compliant. America Recovery and Reinvestment Act of 2009 (ARRA)