Special Features:

A red light indicator which indicates that the timing circuitry had reset to zero prior to starting the current measurements; the indicator will flash for about 0.2 seconds orduration of the x-ray exposure whichever is greater; for use on calibrator, timer, mdl 07-457

Properties:

A two electrode, solid state, optoelectronic device that emits visible or infrared radiant energy when electrically energized. May or may not include mounting hardware and/or heat sink. Excludes lamp, cartridge; and light, indicator. For solid state devices which are responsive to infrared or radiant energy, see semiconductor device (1), photo.