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The time relay for photo printing "Don" was produced presumably since 1990 by one of the Rostov factories. ,86e6f450b8cc469628ba70bf2947b049The 4-bit time relay "Don" is designed to turn on the photo enlarger lamp for the set exposure time of the photographic paper from 0.1 to 9999 seconds. ,86e6f450b8cc469628ba70bf2947b049Accuracy 0.01 sec.,86e6f450b8cc469628ba70bf2947b049,null,ru,null,null,null,null