Multipurpose Programmable Digital Timer Module TM-619-1 Input: 100-130VAC Output: 200/250VAC , Frequency: 50/60Hz, Current: 10/16/30Amps @250VAC. Power consumption: 5VA, Back Up Battery: 3 VDC lithium button cell, Operation temperature: 10~55 Celsius. Battery Use CR2032, please for turn on check the picture.