Features of the Timer 1. You can use this timer to turn on/off any electrical device according to the preset time. 2. It allows you to set 16 sets of on/off programs per day and 15 combinations per week. 3. It supports programming in 24 - hour format or by week. 4. It has a built - in battery to back up the memory (save the programs you set) during a power outage. 5. It automatically corrects the time error every week, with an error range of ±30 seconds. 6. The 16 sets of on/off programs can be executed repeatedly, and you can also manually set the on/off. 7. It is equipped with an easy - to - read LCD display and LED indicators. 8. The countdown shutdown time ranges from 1 minute to 24 hours. Five Functions of the Multifunctional Programmable Timer Switch 1. Clock display (12/24 - hour format) 2. Timer (programmable) 3. Countdown 4. Automatic weekly time deviation correction 5. Sleep mode Usage Method The TM618 timer module can automatically turn on or off various electrical devices and power sources according to the preset time. These devices can be street lights, neon lights (signs), electrical appliances, broadcasting equipment, etc. This digital timer switch has a built - in rechargeable battery (1.2V/40Ma), uses a high - precision CMOS chip, has strong anti - interference ability, and is easy to use. Reasons to Choose TM618N 1. It has a 1.6 - inch large - size LCD display, which is easy to read. 2. It has excellent load capacity, reaching 16 amps at 250V AC voltage. 3. It is simple to program. Color White Material Plastic Package Contents 1 timer switch Only the above - mentioned items are included in the package, and no other products are included. Notes Light reflection and different displays may cause slight differences between the color of the item in the picture and the actual product. The allowable measurement error is ±1 - 3 cm.