Macromatic TR-6816UProduct Attribute Attribute Value Function Multi Function Overview The TR 681 & TR 682 Series offer the flexible programmability of a multi function and multi range time delay relay together with a universal input voltage. These products provide an easy method to select one of eight (TR 681) or four (TR 682) time delay functions and any time range between 0. 05 seconds and 100 hours. Four or eight timing functions in one unit easily selectable with