1、Programming Function: 24 hours a day, 7 days a week programmable. Repetitive program, with 16 on and off settings, supports manual setting of on and off, which is accurate and reasonable 2、LCD Screen LED Indicator: The timer switch adopts an LCD display screen with LED indicator, clear and intuitive; Equipped with a countdown function, it can count down to off within a maximum of 24 hours 3、Automatic On and Off: This programmable timer helps you automatically turn on and off light and other home appliances, saving you time and electricity costs, making it very suitable for home use 4、Versatile Settings: Supports 16 on and off programs per day and 15 combinations per week. This timer switch is convenient and practical, helping to extend the lifespan of electrical appliances 5、Battery Backup Memory: Support battery (not included) backup memory, you can back up the memory in case of power failure, save the program you set, ensure data security, suitable for more scenarios Item Type: Timer Switch Model: TM919H-2 Material: Flame Retardant PC Capacity: Resistive 16A, Inductive 8A Power Supply: <5VA Time Range: 1min to 168h Power Outage: 90 days Program: 16 on off per day Average Error: < ±2 seconds/day Temperature Range: -10-50℃ Humidity: <95% Mounting: 35mm DIN Rail Battery: 1 x 3V CR2023 Battery (not included) Size: Approx. 3.5 x 6.5 x 8.7cm / 1.4 x 2.6 x 3.4in 1 x Timer Switch 1 x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store