... freely; Delay output,3 output control. 2011---HH series Intelligent Segments Time RelayHH4 series, 48*48*80mm, dual line 4 digits displayHH9 ... timing.2, Dual 4/6 digit display in **H**M**S /demical system format. Range: 0.01S--999999H. High accuracy. ... (accumulated timing). Special request can be customized, eg. motor step control.4, Standard RS232/RS485 communication interface, MODBUS RTU protocol ...