Key benefits Precise, selectable timing resolution from 0.01 s up to 1 minute for accurate control of processes. Automatic timerange switching and cyclic increment/decrement behavior to simplify input and avoid outofrange errors. Six programmable working modes with nonvolatile memory of mode and settings (automatically memorized 5 s after setting) for repeatable operation. Functions and performance Display formats control timing resolution and range. The correspondence in the product is: X.X X — time range/resolution 0.01 s X X.X — time range/resolution 0.1 s X X X — time range/resolution 1 s X.X.X — time range/resolution 1 min Two independent time parameters: T1 and T2 (examples used in this product: T1=4.05, T2=0.1.0). Automatic range switching: the device defaults to seconds. If you decrement below the minimum display value, the range wraps to the upper limit (99.9 s); if you increment past the upper limit, the range wraps back to 0.0.0. Example countdown behavior: When T1 is set to 8.88, the controller counts down with 0.01 s resolution. When T2 is set to 8.8.8, the controller counts down with 1 minute resolution. Six working modes available (selectable as P0 through P5). To change modes, longpress the setting key to enter the P0 parameter area, then use the minus key to select the required working mode. Mode memory: after selecting a working mode (for example P3) and setting times, the controller automatically memorizes the setting 5 seconds after configuration and starts running. How to set basic operation Set time values: enter T1 and T2 in the required display format (for instance T1=4.05, T2=0.1.0). Set working mode: choose the desired mode (e.g., P3). The unit will save the setting automatically after 5 seconds and begin operation. Change working mode: longpress the setting key to access P0, then use the minus key on the interface to select one of the six modes. Practical applications (examples) Laboratory timing: perform repeatable shortinterval measurements or reagent additions using 0.01 s or 0.1 s resolution. Industrial automation: control machine cycles, delays, or sequencing where minutelevel or secondlevel timing is required. Test benches and quality control: automate start/stop cycles, endurance tests, or timed stimuli with reliable memory of settings. Notes and compatibility The controller is intended for applications requiring selectable timing ranges, programmable working modes (P0 to P5), and reliable retention of mode and time settings. Follow the device's displayformat conventions (X.X X, X X.X, X X X, X.X.X) when entering times to ensure correct resolution and range selection. Use the builtin autorange wrap behavior to efficiently set values near the minimum or maximum without manual range changes. This description preserves the original control logic, displayformat mappings, time examples, and workingmode procedures (T1/T2 examples, P3, P0, automatic memorization after 5 s, and automatic range switching).