[Multi-period Setting] Adopt high precision industrial grade chip for accurate timing control. It can be programmed timer 24 hours a day, 7 days a week. It can use 16 on/off settings to repeat the program and manually set it on/off. With the built-in memory function, the Timer Switch remembers your programmed settings even in the event of a power failure. You don't need to worry about resetting it every time the power goes out. Setting time: 1 min-168 hours. Power-off memory: 180 days or more. [15s Self-locking Function] The Timer Switch features a self-locking mechanism that ensures your settings are secure. Once programmed, the switch locks itself after 15 seconds, preventing accidental changes or disruptions. The built-in rechargeable battery is used as a backup power supply to maintain the timing, display and data storage in case of no external power supply. This ensures uninterrupted operation and reliable performance at all times. [Capacitive Rubber Key & ABS Flame Retardant Shell] Word key separation, sensitive keys, good hand feeling, long service life. Additionally, the switch's ABS flame-retardant shell offers enhanced safety and durability. The Timer Switch features a convenient bottom contact design, allowing for easy installation and connection. Its back hook design provides versatility in mounting options, ensuring a secure and space-saving installation. [Easy to Install & Heat Sink Design] The time controller is designed with LCD digital display, which makes the readings more intuitive and clear. The timer switch has a clear structure and uses a 35mm rail for installation. It can be completed in a few minutes without using complex tools, which can save you time and energy. Its heat sink design helps dissipate heat effectively, ensuring optimal performance and a prolonged lifespan of the switch. [Multiple Uses & Customer Service] Suitable for the automatic control of street lamps, neon lamp, advertising sign lamp, light timer, water heater timer, production devices, broadcast television devices and other power devices. Your satisfaction is our top priority and this is why we strive to provide you with the best quality products and service. So if for any reason you're not completely satisfied with our Digital Timer Switch, please let us know and we'll be happy to help you!