Backing:3M adhesive backing; Size: 120mmx120mm; It's Electricity AND Heat you are coping with. We are absolutely your right choice with 100% guarantee for high quality heaters, Much safer and more reliable heat source than RepRap PCB heatbeds. With 1meter NTC 100K 3950 thermistor for temperature Control. The silicone bed can heat up more than 150 degree easily; Power consumption: 120W. Attached with two pieces 1meter length power wire.