Jon Klima, Owner
360 Trout Lane, PO Box 23, Guffey, CO 80820
Phone: 719 479-2281,  Email:
In business for 40 years





The Model No. H-1600 Control Test Set duplicates every control function such as frost conditions, upper limit conditions, and 0-22° F. differential temperatures. The test set provides a check for control linearity and isolates system problems so that you may be assured that all system components are properly operating upon test completion.


The purpose of the test set is to simulate, by means of push button switches and fixed resistors, the sensor inputs to differential temperature controls manufactured by Hawthorne Industries. It is also equipped to monitor voltage output from the control.


If you are looking to replace your defective Hawthrone H-1600 Controller test set or just want one as a backup, order this one today as it is the only one left. Prices shown do not include postage.  Colorado sales will be charged the appropriate sales tax. Yes, I accept credit card payments through PayPal, checks, and money orders.  For questions or to place an order, send me an email (see top of this page) stating what you are interested in along with your zip code.  I'll check the postage to your zip code and send you a return email with the total cost.




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This page was last changed on 2-26-2019