Note Tips: 1.Kindly pls reading Instruction manual carefully and to adjust the temperature that you need when using it for the first time. 2.We recommend starting low and gradually increasing your settings from 2.5-4.5 temperature grade for the different thick bags,it's better don't exceed 5 grade temperature. 3.The red light is not predictable when plug into the power.It is only predictable when keep the handle pressed down on bottom.This is a protection for sealer or it will burn out after several uses.When seal is done,the red light will go off. 4.Keep the handle pressed down for 2-3.5 seconds to get seals optimal results.Otherwise the sealing place will be not smooth.When seal is done,the red light will go off. 5.Keep the sealer's surface clean to avoid the oxidation of the residue which will reduce the life of the heat sealing strip. 6.Do not use wet cloth to clean the surface of heat sealing strip. 7.If this machine works continuously for more than 30 minutes,please let the machine rest for 3-5 minutes. PP and PE bag thickness reference: Max sealing thickness:13.5mil Recommended Max sealing thickness:10mil = 0.254mm 3.5-4.5/ temperate grade for---10mil=0.254mm 4.5-5.5/ temperate grade for---11mil=0.2794mm 5.5-6.5/temperate grade for---12mil=0.3048mm 6.5-8/temperate grade for---13.5mil=0.3429mm Energy Conservation Manual Impulse Sealer,Non-Toxic,Odorless,Durable,Reinforced and Compression,could seal more than 10000 bags. Specifications： Voltage: 110 V / 60 hz Impulse power: 350W Heat Time: 1.5-3.5 Sec Sealing length: 12" (300mm) Sealing width: 2mm Package Contents: Impulse heat sealer +1 Extra sealing elements + Instruction manual