... 4x0.22mm ,(4 core ,7/0.20 copper, 305m/roll)designed for intruder alarm systems with good quality and ... cable 4x0.22mm ,(4 core ,7/0.20 copper, 305m/roll) Cable Introduction:Burglar alarm cable is specifically designed ... strands of 0.20mm annealed tinned copper, plain bare copper, copper clad aluminum or tinned copper clad aluminum.Specification:l Conductor: ... 4x0.22mm ,(4 core ,7/0.20 copper, 305m/roll)