Usage: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. LCD display,easy to read. Excellent load capacity, voltage output. Specification: Type: Timer Switch Theory:Electronic Model Number:TM618H-1 / TM618H-4 Max. Current of Output Load:16A Mini interval:1 minute Max interval:7 days Countdown OFF time range:1 min ~ 24 hours CLOCK DISPLAY TIMER (12/24hr FORMAT) AUTO TIME DEFLECTION CORRECTION, WEEKLY SLEEP MODE You can use the timer to SWITCH ON/OFF any electrical equipments at a preset timer 16 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 failure Auto time error correction +/- 30 sec, weekly Repeat programs with 16 on/off settings, and setting on/off manually, Easy to read LCD display, LED indicators Temp.range: -20°C+50°C Power Supply:110V AC / 12V DC Power consumption 4.5 VA (MAX) Display: LCD Switching contact: 1 changeover switch Hysteresis 2 sec/day (25°C) Capacity: 16(8)A 250V AC Black-out: 60 days Timer range: 1min~168hr Average error: 1s/24h, 25°C Material: ABS+electronic components colour: white Package Contents: 1 x Timer Switch Only 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.