Self-regulating Working Principle: This cable is suitable for household drinking water pipe, drain pipe freeze protection in winter and other heating applications. The cable can self regulate the output power according to the temperature, it won't overheat, so the temperature controller is not necessary. The cable is with high quality PE jacket, and inner has the PE composite insulation layer, better water-proof and good quality. Attention :When you order one more piece, please make a note whether you want send in pieces or an entire line. Technical Data: Cable type: self-regulating heating cable 1. Working voltage: 200~240V AC 2. Rated power: 20W/m (at 10C degrees) 3. Max maintain temperature: 65C degrees 4. Max enduring temperature: 135C degrees 5. Width * Thickness: 8.1mm * 3mm 6. Min bend radius: 15mm 7. Conductor: tinned copper wire 8. Jacket: PE Structure: 1. Copper conductor 2. Conductive heating element 3. I inside extra insulation 4. PE outer sheath !!! Please contact us if you require a larger quantity we will reply in 24 hours. !!! Shipping 1.If you need to buy in bulk, please contact, we will reply in 24 hours. 2.We are always working hard to ensure your package arrives as soon as possible. Please understand that some factors like weather, high postal traffic, and the performance of shipping companies are outside of our control. 3.Usually product Reaches after about 12-45 business days depending on destination. If you have not received your shipment within 45 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Refund or resend product will be offered if item still not received. 4.We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important. We ask you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns. It is impossible to address issues if we do not know about them! THANK YOU :)