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SK2-DU. Sound Trigger-Delay Unit Package*

This package includes the parts to build a sound trigger with an electronic delay unit.  There is a $1.00 discount from the price of both kits purchased separately. There is an additional $1.00 discount for purchasing the combination with a breadboard.

When built on a breadboard, the completed circuit will look similar to that shown. Click on the photo for a larger view.

For descriptions of the sound trigger and delay unit kits, go to these links: 

SK2 sound trigger kit                DU electronic delay kit

SK2-DU  Sound Trigger-Delay Unit Package- $13.00

SK2-DU-BB  Sound Trigger-Delay Unit Package with Breadboard - $18.00

*Customers have reported that when using the delay unit outputs to trigger Canon 430ex and 580ex flash units, the flash unit is disabled after each discharge until the unit is turned off and on again. In order to correct this problem, two 1-kW replacement resistors are included with each delay unit and combination kit. These resistors may be used in place of the 22-kW resistors that lead from outputs 5 and 9 of the 556 timer.

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