4. Direct output, input = output 1. Wide time range: digital cycle timer relay module, time range from 1 second to 999 hours 3. Support multiple working modes, including timer, cycle and period working modes, meet most of your needs. 2. Dual LED display: red and blue dual LED display module and touch buttons, easy to set the delay time and working mode. 5. Installation size: 77x39.3mm, embedded installation, suitable for a variety of application scenarios