TM 6000 series is a kind of electrical interface equipment developed by our company which is applicable for non-explosion-proof areas and can be used to connect site instruments and control room. Through reliable power-input-output isolation, it can resolve the site interference of auto-control system and make sure the stability and reliability of the system. TM 6000 series, including many models selectable, can satisfy the need of signal isolation, distribution, transformation, allocation and alarm driving in the auto-control system.