I made one that looks just like it, I use it to control and heat strip I put around my telescope to keep the dew of the correcting plate. Works very well.
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73 de Bill, (N7OQ)
RV: 2006 Outback 23RS
USAF Retired, God Bless our Troops
Licensed in 1978 ex N7AFX, DA1VW, KK6GR
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