1、PTC heating core can not be directly immersed in liquid. It can be dry-fired in air, placed at the bottom of the container of liquid, or contacted with solid medium. 2、The service life of the product is long. The general standard is that the power attenuation after 2000 hours is less than 10%. 3、PTC products have the characteristics of automatic energy saving. When the heater raises the ambient temperature, its power will gradually decrease, only 90%, 80% or less of the rated power. 4、PTC products have incomparable advantages over traditional heating elements, such as constant temperature heating, no open fire, high heat conversion rate, minimal influence by power supply voltage, etc. 5、The product can be dried for a long time and is suitable for heating solids and gases. Feature: PTC heating core can not be directly immersed in liquid. It can be dry-fired in air, placed at the bottom of the container of liquid, or contacted with solid medium. The service life of the product is long. The general standard is that the power attenuation after 2000 hours is less than 10%. PTC products have the characteristics of automatic energy saving. When the heater raises the ambient temperature, its power will gradually decrease, only 90%, 80% or less of the rated power. PTC products have incomparable advantages over traditional heating elements, such as constant temperature heating, no open fire, high heat conversion rate, minimal influence by power supply voltage, etc. The product can be dried for a long time and is suitable for heating solids and gases. Specification: Power: 70W; 150W (Optional) Voltage: 12V; 24V(Optional) Heating Material: PTC Thermistors Heating Mode: Heat through the flow of air or direct contact with an object Product dimension: 74 x 42mm / 2.9 x 1.7in(Ripple length: 54mm) Heating object: Solid and gas Weight: 42g / 1.5oz Package list: 1 * Ripple Element Heater Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product.