The cable is designed for house water pipe and solar upper water pipe freeze-proofing protection requirement in winter, to maintain the water in pipes above 0 centigrade, and do not need a controller. The cable is very easy to install, suit for metal and plastic water pipes. We use the pure copper as the conductor, and the PE jacket, it's durable, UV resist, better than PVC jacket. Product name: water pipe heating cable/self regulating heat trace cable Voltage: 220V 230V 240V Power: 15-20W/M at 10 centigrade Length of power cord: 1.5 meter Max working temperature: 50 centigrade Min installation temperature: -30 centigrade Start-up current: less than 0.6 A/m Min. bend radius: @20C:25.4mm @-30C:35.0mm Cable Structure: 1. Pure copper conductor 2. PTC heating element 3. PE insulation Package Including:2/5/8/10m heating cable with Switch and EU-plug( 1.5m power cord)