Telecommunications cable JY(ST)Y, as a voice line in intercom and extension set-up for permanent installation in dry and damp interior rooms and for permanent installation on external walls (protected from sunlight) outdoors, no installation in the ground!, bare single-wire copper conductor 0.6 mm, stranding element pairs, color as core identification, foil shield over stranding, jacket color gray, copper earthing wire under aluminum-coated foil, outer jacket PVC, nominal voltage 300 V, test voltage 800 V, max. operating temperature +70°C, min. installation temperature -5°C, max. installation temperature +50°C, bending radius permanently installed 7.5 x cable diameter, when laying from the coil or ring, unwind so that no twists or kinks occur!