1. You can use the timer to turn ON/OFF all electrical appliances at a preset time. 2. 16 ON/OFF programs per day, 15 combinations per week. Programmable for 24 hours / one week. 3. Built-in battery to back up memory (save your set programs) during power outages. 4. Automatic time adjustment +/- 30 seconds every week. 5. Repeat programs with 16 ON/OFF settings and set ON/OFF manually. Easy-to-read LCD display, LED indicators. PROGRAMMERABLE MULTIFUNCTIONAL TIMER HAS FIVE FEATURES: 1. CLOCK DISPLAY 2. TIMER 3. COUNTDOWN 4. AUTOMATIC TIME CORRECTION +/- 30 SECONDS WEEKLY 5. STANDBY MODE Usage: TM618 timer MODULE (1.598 TUM large LCD display) can open or close various electrical appliances automatically according to the preset time. Items can be desk lamps, neon lights (signs), electrical appliances, broadcasting equipment etc. The digital timer has a rechargeable battery (1.2V/40Ma), high-precision CMOS chip, strong anti-interference, easy to use. Size: 7.0 cm x 7.0 cm x 4.0 cm Material: ABS+Electronic Components Color: White Package Contents: 1 x TM618N-4 Timer 1 x User Manual Only the above package contents included, other products are not included. Note: Color differences may occur due to lighting and screen variations. A tolerance of +/- 1-2 cm is allowed due to manual measurement.