The ONPUL controls heating temperatures by measuring them right at the heating element. The sensor comes in direct contact with the heater, preventing the temperature from exceeding the preset temperature. The vacuum sealing function flushes the air inside of the bag and reduces the package volume, and can extend the life of the product as an oxygen scavenger. The gas-flush sealing function fills the bag with nitrogen gas to prevent oxidation, or with carbon dioxide to prevent spoilage or mold growth or to create bacteriostatic or insect-repellent effects. Available in sealing lengths from 600mm-1,500mm.