Easy-to-read LCD display with LED indicators. Minimum interval: 1 second. 8 ON/OFF programs per day, up to 15 program combinations per week. 24-hour/day and 7-day programmable timer. Countdown function with up to 24 hours countdown to OFF. Built-in rechargeable battery preserves settings during power outage. Repeat programming with 8 ON/OFF settings; manual ON/OFF control available. Suitable for household use with panel mounting. Model Number: CN101S-5V Power Supply: 5V Maximum Load: 16A Minimum Interval: 1 second Timing Range: 1 second to 168 hours Program Groups: 8 ON/OFF per day Total Programs: 15 groups Power Failure Memory Backup: Up to 60 days Average Timing Accuracy: Less than ±2 seconds per day Battery: Built-in 1.2V rechargeable battery Installation: Panel or wall mounted Dimensions: 7.0 cm x 7.0 cm x 4.0 cm Material: ABS + electronic components Color: White Package Includes: 1 x TM618N-4 switch 1 x User Manual Note: Colors may vary slightly due to monitor and lighting differences. Measurement tolerance: ±1–3 cm.