Plastic Film Sealer. Here are the most important details about the device. Device type and model: Model PFS (PFS-300-400). Electrical power: From 200 to 350 watts, and it works on 220/240 volt electricity (50/60 Hz). How to use in brief: Set the time: The sealing time is adjusted according to the thickness of the bag you want to seal. Sealing method: Place the edge of the bag over the work area and press it down evenly. Lifting time: Do not remove the bag until about one second after the red light turns off. Electricity consumption: The device does not consume power when it is idle and not working, meaning it's okay not to unplug it all the time.