Features: 1.Wide time range: Digital cycle timer relay module, with a time range from 1 second to 999 hours 2.Dual led display screen: Red and blue dual led display module and touch buttons, easy to set delay time and working mode 3.Supports multiple working modes, including timed, cyclic, and periodic working modes, to meet most of your needs 4.It can be a power on delay (i.e. Delayed action after power on) or a power off delay (i.e. Delayed reset after power off) 5.Installation size: 77 *39.3mm, embedded installation, suitable for various application scenarios Parameters: Product name: T3230/T3231 Timing range: 0-999s, 0-999m, 0-999h Power supply voltage: ac 110v-220v Output type: switch type, no output from contacts Relay type: 1-channel normally open relay Timing unit: seconds/minutes/hours Timing range: 0~999, minimum measurement unit 1 second Loop switch: supports Delayed startup: supported Delayed shutdown: supported Infinite loop: supports Power off saving: supported, only saves settings, power on reset and restart Beep alarm: none Product size: 79.5*42.1*27.8mm Installation opening: 77*39.3mm Led display screen: red+blue dual display screen Package include: Delay relay*1