●Inorganic EL Sheet Blue Light 1.4 x 5.0 inches (3.5 x 12.7 cm) ●Suitable for LCD backlight. ●The surface is covered by a laminate film for protection. ●Operating Voltage Range: 25 - 180 V, Optimal Operating Voltage: 115 V, Operating Frequency Range: 50 - 5000 Hz, Optimal Operating Frequency: 400 - 600 Hz, Working Temperature: -10 - + 60 °C. ●This product is for EL sheet only. Instruction manual is not included. Cannot be cut to use.