The ON TIMER can be ADJUSTED FROM 1 sec. Up to 60 hours (modifications can be made upon request). The OFF TIMER can be ADJUSTED FROM 1 sec. Up to 60 hours (modifications can be made upon request). The two timers are independent from each other, ie the ON timer can be set for hours while the OFF timer can be set for seconds. There is a cycle mode which allows you to repeat the function (ON-OFF - ON-OFF, etc.). It is possible to switch the cycle mode ON or OFF. ALSO There is a pre-set time for more accuracy (time base). You can use External pushbuttons for START and STOP function. All our boards are assembled and checked that it is working before sending out. Warranty 5 Years Specifications: adjustable delay: 1s - 60h (ON or OFF) power supply: 12VDC / 100mA Relay contacts: 240VAC/DC 7A max. dimensions: 6.0 X 5.0 cm Business seller information: S.P.C Electronics. Spyros Papakonstantinou. Paparigopoulou 20 Str. 8046 Paphos. Cyprus. Value Added Tax Number: CY 90005904X