A. This is a programmable countdown timer, with the longest setting time of 120 minutes and relatively accurate timing. The large time scale allows for quick time setting and clear reading. B. The timer switch features a plastic shell and internal copper material with high conductivity, presenting decent performance, environmental protection, safety, robustness, durability, and reliable usage. C. This smart countdown timer is universal and wall-mounted, making installation very convenient. The timing range can be controlled by the switch button, which is easy to adjust. D. Rated voltage: AC 220V 50Hz. Maximum current: 15A. The timer switch can be widely used to control water pumps and household appliances, such as water dispensers, water heaters, air conditioners, electric fans, heaters, routers, mobile phone chargers, electric bicycles, etc. Note: The data is all manually measured, please allow 1-3cm error due to differences in light and display, and there may be color differences; please refer to the actual item received.