EM312SR Input output module The EM312SR connects directly to the loop and is equipped with a supervised input (capable of controlling the status of external devices), a supervised output (capable of driving of one or more audible/visual signalling devices) and a voltage free output (capable of driving all types of external devices, for example, electromagnets, etc). 1 supervised input 1 supervised output 1 supervised imput for external power supply 1 voltage free output Built-in short circuit isolator 3 multicolour LEDs for input/output/isolator status signalling Automatic addressing (each device is identified by a factoryassigned serial number)