Replacement Parts
If replacement parts are needed, you can order them directly from JLCooper
Electronics.
You can contact us at the following email address:
You can also contact us at the following phone number:
+1-310-322-9990
Power Supply
The ES-450J uses a power supply that is rated at 9 volts DC at 500mA. The
connector is a barrel connector that is 11mm long, has a outer diameter of
5.5mm and center diameter of 2.1 mm. Connector is positive polarity.
If you you need to order a replacement, you can order it directly from us.
The JLCooper part number is 561036.
Care And Service
If properly cared for, your ES-450J should provide years of trouble-free
performance. While the ES-450J is built in a rugged metal enclosure, please
avoid dropping the ES-450J or hard banging on the keys.
Clean with a soft cloth dampened with window cleaner. Do not allow liquids
or foreign matter to get inside the unit.
There are no user-serviceable parts in the ES-450J. Please refer to the
really fine print following for detailed warranty and service information.
11mm
5.5mm outside
2.1mm inside
ES-450J RS-422 User’s Manual
August 24, 2018
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