7 day digital programmable timer -- digital electronics general purpose time switch with daily and weekly programs (10 different mode). 1 Min to 168 hours full time range. Repeat programs with 16 on and 16 off settings. To-the-minute setting accuracy. Lcd display -- lcd displays real time to hour/minute and on/auto/off, large lcd screen for easy reading, you can see every figure on it clearly. Built-in rechargeable battery -- it has a built-in 1.2V/40ma rechargeable battery and a industrial grade chip, so the unit retains the programming setting even in a power outage. Easy operation -- large screen and clear key button for easy and accurate operating. D+(setting the days), h+(setting the hours), m+(setting the minutes). Wide application -- this timer switch could automatic turn on/off electric equipment according to the time user set. With high precision and strong anti-interference ability, the timer switch is great for controlling street lamps, neon lamps, production equipment, radio and television and many other home appliances.