Item is designed to warn the pilot of a dc power overload condition; power 28v, 60 amps per channel; altitude range 0 to 60, 000 ft; reliable to a 36, 000 fpm alt. Change; operating temp neg 65 degrees f to pos 160 degrees f; o/a dim in in., 3.000 w, 3.250 max lg, 1.750 max h