California Proposition 65 Warning: This product contains a chemical known to the State of California to cause cancer. Warning: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm.Sound/Alarm/Security Cable, Unshielded, Riser, Conductor Type Stranded Copper, Number of Conductors 4, Voltage 300, Color Gray, Stranding 7/26, Insulation Premium-Grade, CoIor-Coded S-R PVC, Vertical Tray Flame Test CA State Fire Marshall Approved, Temp. Range -4 F to +167 F(-20 C to +75 C), Standards NEC Article 725 Type CL3R (UL: 75 Degrees C, 150V); NEC Article 800 Type CMR (UL: 75 Degrees C, 300V); RoHS Compliant Directive 2002/95/EC, Jacket Material Premium-Grade, Gray PVC