This cable Applications:Wiring of thermostat controls, heating & air Conditioning equipment, doorbells ,ouch-plate systems, burglar alarms, intercom systems, annunciator and bell systems, remote control units, signal systems and other low-voltage applications. Pure Copper Conductors: Our thermostat cable is built with solid pure copper conductors, providing maximum conductivity and reliability to ensure that your systems run smoothly. 300V (CL3) Power-Limited Circuit Cable: Our cable is rated at 300 volts and classified as a Class-3 (CL3) Power-Limited Circuit Cable, capable of carrying a surge of up to 300 watts. Installation-Friendly Design: With its round, slick jacket and smooth edges, our cable is easy to pull through rough corners and edges. The jacket also features a rip cord for effortless removal during installation. Sunlight Resistant and RoHS Compliant: Our cable is designed for both indoor and outdoor use.