This product must be used separately for a power distribution socket with socket specifications ≥10A, 2500W. It is forbidden to use multiple devices in the same circuit to avoid excessive heat generation, burnt, and even fire hazard. Please follow the instructions to use the device correctly! The heater of this DONYER POWER brand heater is an electric heating wire, which is worn in the quartz tube, which plays the role of support, protection and heating. It is heated by far-infrared quartz tube. The heat transfer mode is radiation line. It has strong penetration and good heating orientation. Ordinary quartz tube has no waterproof function, but in order to provide users with more use range, this heater of DONYER POWER brand is waterproof grade IPX4. Fast heating, plug and play. Energy saving, economical and practical. Waterproof grade IPx4