Programming Function: Programmable 24 hours a day, 7 days a week. Offers 16 on/off settings per day with manual programming options for precise control. LCD Screen and LED Indicator: Features an LCD display with LED indicator for clear visibility. Includes a countdown function that can be set to turn off within a maximum of 24 hours. Automatic On and Off: Automatically controls lights and other household appliances, helping save energy and reduce electricity costs. Ideal for home use. Versatile Settings: Supports up to 16 on/off programs daily and 15 weekly combinations. Helps extend the lifespan of connected electrical devices. Battery Backup Memory: Equipped with battery backup support (battery not included) to retain programmed settings during power outages for up to 90 days, ensuring data security and reliable performance in various environments. Item Type: Timer Switch Model: TM919H-2 Material: Flame Retardant PC Capacity: Resistive 16A, Inductive 8A Power Supply: <5VA Time Range: 1 minute to 168 hours Power Outage Memory: Up to 90 days Program: 16 on/off cycles per day Average Error: < ±2 seconds per day Temperature Range: -10°C to 50°C Humidity: <95% Mounting: 35mm DIN Rail Battery: 1 x 3V CR2023 (not included) Size: Approx. 3.5 x 6.5 x 8.7cm / 1.4 x 2.6 x 3.4in Package Includes: 1 x Timer Switch 1 x User Manual Note: Due to differences in lighting and screen settings, the item's color may vary slightly from images. Slight dimensional variations may occur due to manual measurement.