Customizable Timer Switch: This light switch timer repeats programs with 16 ON/OFF settings. Setting accuracy to the minute. LCD Display & Easy to Install: This digital time switch adopts real-time LCD displays on "Hour/Minute" and "On/Auto/Off"; DIN Rail Installation, DIN Rail is not included. Indoor and Outdoor Electrical Timer Switch: This timer relay with high accuracy and strong anti-interference ability, the timer is ideal for controlling street lamps, neon lights, production equipment, radio and television and many other household appliances. Rechargeable Batteries and Industrial Chips: This programmable digital timer has a built-in rechargeable battery and industrial grade chip, which can protect your programs during power outages. Advanced Preset Function: This programmable timer switch allows advanced preset of one week in advance, with a universal digital electronic switch for daily and weekly programs, minute setting. The timer defaults to 24-hour mode. Press and hold the "Time" button (bottom left of "Reset") for 5 seconds until "AM" is displayed to set the 12-hour mode. Press and hold the "Time" button again for 5 seconds to return to 24-hour mode. Dimensions: 86 x 36 x 65 mm. Note: The data are all measured manually, please allow 1-3 cm error. Due to differences in light and display, there may be some color differences, please refer to the actual item received.