nanjiren pure copper plug board household porous plug row length m office cable connecting board dormitory power supply row socket

master control 2-bit 7-hole general control 3-bit 12-hole master control 4-bit 14-hole general control 3-bit 15-hole general control 4-bit 20-hole general control 6-bit 21-hole 8-bit 28-hole master control general control 6-bit 30-hole general control 8-bit 40-hole sub-control 3-bit 15-hole split control 4-bit 20-hole 5-bit 25-hole sub-control

full length 1.8 m full length 2 m 8 full length 4 m 8