The Zona JQ -37 is a neat package which 'does what it says on the package'. BUT the only paperwork that came with it was a detailed specification in a host of languages. No fitiing instructions (although not really necesary) and an indistinct wiring diagram cast into the plastic on the back of the device. More annoying there were no instructions on how to set up the adjustment controls. The 'time' control was fairly obvious, but the 'Lux' control effects could only be established by experiment.
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