You can use the timer to SWITCH ON/OFF any electrical equipments at a preset timer16 ON/OFF programs per day, 15 combinations to a week.24 hours / 7 days a week programmable.Built-in battery for backup the memory (save the programs you set)when power failureAuto time error correction +/- 30 sec, weeklyRepeat programs with 16 on/off settings, and setting on/off manuallyEasy to read LCD display, LED indicatorsCountdown OFF time range 1 minute to 24 hoursMULTIPURPOSE 7 DAYS PROGRMMALBE TIMER SWITCH HAS FIVE FUNCTIONS:1. CLOCK DISPLAY (12/24hr FORMAT)2. TIMER (7 DAYS PROGRAMMABLE)3. COUNTDOWN4. AUTO TIME DEFLECTION CORRECTION, WEEKLY5. SLEEP MODEUsage:The TM618 timer MODULE can open or close kinds of electrical apparatus and power automatically, according to the preset time,the items can be streetlight, neon light (sign), billboard, electrical appliances, broadcast equipments etc., the digital timer switch is within rechargeable battery, in 1.2V/40Ma, high-accuracy CMOS chip, strongly anti-jamming, easy to use.Why choose SinoTimer TM618N?1. 1.6 inch big LCD display,easy to read.2. Excellent load capacity, 16amp@250vac.3. Easy program.Colour:WhiteMaterial:plasticPackage Contents:1 x Timer SwitchOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.