Indoor Models Wall Mounting / Side Mounting / Ceiling mounting Powder coated rugged metal holder LED light source 1700 mAH Nickel Cadmium battery for 8 hours power backup Selection of various signage codes Fully automatic solid state charger Input supply of 230V 50Hz / 120V 60Hz Power cord P+N+E of 1 meter length with IEC type D 3 pin plug.