特征：
1.直径4.2mm PU线，柔韧耐用
2.连接器：RJ-45 8 针插头
3.适用于TM-231, TM-241, TM-731A, TM-631A, TM-201A, TM-401A, TM-201B, TM-401B, TM-211A, TM-411A, TM-221A, TM-321A, TM-421A, TM-521A, TM-231A, TM-331A, TM-431A, TM-531A, TM-241A, TM-441A, TM-541A, TM-701A, TM-721A, TM-621A, TM-2530A, TM-2550A, TM-2570A, TW-4100A, TW-4000A