TEST GENERATOR: SD-253TG

Designed, developed and manufactured by Safety Devices, Inc. (SDI) as an accessory for the lightning detector (SD-250B).  Generates a white noise signal for testing the SD-250B.  Black in color, light - weight and uses two each 9V batteries.  Push button switch generates lightning type signals to actuate the 100, 50, 25, 10 mile range.  This unit will also test aircraft automatic direction finders ( aka: ADF) System.

Size: 6 ¼” X 3 ¼” X 1 ¾”
Weight: 11 oz.

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