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: Lindhaus Activa 30 Pro Commercial Upright Vacuum
Product description: It is equipped with a complete set of on board accessories including the replacement filter bag. Very versatile, goes from rugs and carpets to hard floors such as ceramic, marble and wood thanks to a series of roller covers (optional). The dynamically balanced brush roller is mounted on metal supports with ball bearings. In case of blocking a speed sensor sends the information to the electronic control that switches off the motor immediately. The transmission has a double geared belt.
Product feature: Ultra-light machine, Strong and versatile, Electronic overload control, Accessories on board, Integrated DCS dry cleaning system, Brush change without any tool, Interchangeable roller covers
Product price: $26.01
Product brand: Lindhaus
Target attributes: Weight
Answer: attribute: weight
value: None
source: None