... digital Timer RlayHM series Timer Relay has timing function with 3 digit LED display, and thumb swtich ... 1) Timing accuracy: +/-0.1%;2) With output maintain function, maintain range is from 0.1S to ... 99.9H;3) With software menu for setting different function, including timing unit selection (hour ... 3 modes), output maintain time setting, key lock function, etc.4) By selecting different output modes, ...