"The item measures 10.00 in. long and 5.50 in. wide, with a DC voltage range of 5.0 VDC to 31.0 VDC. It is made of AL alloy according to QQ-A-200/250, has a chromate corrosion coating, and weighs no more than 4.0 lbs. The operating temperature ranges from minus 40.0 degrees Celsius to 71.0 degrees Celsius."