21700504 is a type of cable made by the Lapp Group. It is a multi-conductor PVC sheathed control cable designed for fixed installations in dry, damp, and wet environments. This cable is constructed with stranded bare copper conductors and PVC insulation. The overall cable has an additional layer of insulation and an overall layers of aluminum-polyester tape shield and a gray PVC outer sheath. It is flame retardant according to UL and CSA standards, making it a good choice for residential, commercial, and industrial applications such as lighting, building automation, and other control systems.