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: Vktech Solar Snakes Rattlesnake Moles Voles Repeller
Product description: 100% Brand new and high quality A device powered by solar energy, making use of pulsing vibration waves to repel snakes, moles, voles, etc By emitting pulsing vibration wave, the solar snakes repeller drives aways floor & underground rodent very effectively. The snake picks up through sensors throughout its body. And perceives a danger zone causing them to evacuate the area; pulsing vibration waves will irritate them, simulate danger, and repel them away from the irradiated area. (Work power can insolation one day continue work 3 cloudy days.) To make the best use of the product, we strongly recommend an installation of 2 devices at very 30 meters for ground areas frequented by rodents. The solar snake repeller is supplied by a solar cell, a rechargeable accumulator collecting power for operation at night. When the accumulator is fully charged, it can supply enough power for the dark hous, then ensuring a continuous around-the-clock operation. Solar panels power: 4V/ 45mA Rechargeable battery: 1 x 1.2V/ 800mAh "AA" Ni - Cd(Already included) Color: As shown in the picture Solar panel dimension: Approx. 79cm(DxH) Plastic tube dimension: Approx. 7.5 x 3cm(DxH) Metal tube dimension: Approx. 27.5 x 3cm(DxH) Material: ABS, aluminium tube Note: 1. Before first use, you'd better insolation the solar panel for two days, then connect the cable and insert into the earth, so you will have better effective. 2. The base of the top shall be exposed to the outside, according to the terrain varies ensure the water does not exceed the safe line. Includes 1 x Solar Panel 1 x Plastic Tube 1 x Metal Tube 1 x Manual
Product feature: 100% Brand new and high quality, A device powered by solar energy, making use of pulsing vibration waves to repel snakes, moles, voles, etc, Solar panels power: 4V/ 45mA, Material: ABS, aluminium tube, CAUTION: only suitbable for SNAKE and AUSTRALIAN GROUNDHOG
Product brand: Vktech
Target attributes: Type
Answer: attribute: type
value: solar
source: product feature
attribute: type
value: solar
source: product title
attribute: type
value: solar
source: product description
attribute: type
value: battery
source: product description