JDC junction blocks provide convenient connectivity for multiple devices using the MDC (M12) connector. The simple plug and play design of these products drastically reduce installation time and minimizes down time. These junction blocks are offered in 4, 6, 8, 10, and 12 port configurations with a wide variety of home run options. The multi-port blocks are readily available with 3, 4, or 5 pins loaded per port, and with no LED, PNP, or NPN circuitry.