Doug Fleenor Design relay packs use dry contact air-gap relays. These relays have advantages and disadvantages over the solid state relays found in dimmer packs. Solid state relays can be switched on and off rapidly with no wear, but generate heat and leak current even when in the off position. Air-gap relays do not require cooling and do not leak current, but due to their mechanical design have a finite life span. Doug Fleenor Design relay packs should be used where a true-off condition is required (no voltage, no current). They should not be used in applications where they will be turned on and off rapidly such as in chase lights. Ideal applications include fog machines, power to moving light fixtures, motorized disco effects, strobe lights, fans, etc.

Specification
DMX6REL15A & DMX6REL30A

Input signal:	250 Kilobaud, 0.2 volts minimum, 12 volts maximum.
Input circuit:	EIA-485 receiver with two 100 ohm PTC self resetting fuses, four low capacitance transient suppression diodes.
Input connector:	Gold plated 5 pin male (Neutrik D-1 series).
Input pass through:	Gold plated 5 pin female (Neutrik D-1 series). All five pins are passed through.
Power Input:	120 - 240 volts, 50/60 hertz, 2 watts (plus load).
Power Input Plug:	NEMA type 5-15P dead front plug standard, others optional.
Power Output:	Input power is switched to output.
Power Output Socket:	Nylon NEMA type 5-15R receptacle
Output Rating:	15 amps per output. Maximum total load is limited by input rating.
Output Device:	Aromat JTN.
Mechanical life:	10,000,000 operations minimum.
Electrical life:	300,000 operations minimum at 5 Amps. 125,000 operations minimum at 20 Amps.
Color:	Top, bottom and sides: Silver hammer tone. Front and back: Black.
Size and weight:	6.5" deep, 1.7" high, 16" wide, 5 pounds (optional 19" rack adapter)
Warranty:	Five years on defects in manufacturing. Output device is not covered.