Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Waring Commercial WGR240X 240-volt Electric Countertop Griddle, 24-inch
Product description: This countertop griddle constructed of stainless steel material. Its griddle surface with even heat distribution is great for eggs, pancakes, hamburgers, chicken, vegetables and more. Features 21-inch fully removable grease tray. Extra tall steel splashguards with tapered front end for protection against grease and spills. Adjustable thermostat to 570 degree Fahrenheit. Comes with heat resistant handles. It has 240 volt AC, 13.75 ampere, 3300 watts power rating. Approved by UL, NSF certification. Comes with limited one year warranty. Measures 9-3/4-inch height by 28-inch width by 22-1/4-inch depth.
Product feature: Countertop griddle constructed of stainless steel material, Its griddle surface with even heat distribution is great for eggs, pancakes, hamburgers, chicken, vegetables and more, Features 21-inch fully removable grease tray, Extra tall steel splashguards with tapered front end for protection against grease and spills, It has 240 volt AC, 13.75 ampere, 3300 watts power rating; approved by UL, NSF certification
Product brand: Waring
Target attributes: Power Type
Answer: attribute: power type
value: electric
source: product title
attribute: power type
value: watts
source: product feature
attribute: power type
value: watts
source: product description