| The six-output Kendrick DigiFire 7 dew heater controller has 100% digital Pulse Width Modulation operation that is free from RFI (radio frequency interference). This is absolutely necessary if you are into digital imaging, as RFI from a lesser controller can create interference and undesirable artifacts in your digital image that cannot be removed.
The DigiFire 7 has 6 outputs – four programmable for dew heater use and two constant 12VDC output for powering accessories, such as cooling fans, computerized setting circles, secondary mirror heaters etc. Each of the programmable outputs can be set individually to operate on a variable power duty cycle system. This system alternates between periods of full power output and zero power output. A 20% duty cycle, for example, would be on 20% of the time and off 80% of the time. This is much more power-efficient than a resistive-type controller, which wastes 80% of your battery power heating a resistor rather than heating your optics when it is set for a 20% power level. The duty cycle system can operate from zero output to 100% in 10% increments.
The DigiFire 7 has reverse polarity protection and a low voltage cut-off to protect your battery from being discharged too deeply. The system is firmware upgradeable. It comes in a brushed stainless steel case that measures 5.5” long x 3” wide x 1” high. It has a bar graph LED display to show the operating status and allow you to program the individual duty cycles. |
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