Siemens SM 1221 Series Digital Output Module for Use with S7-300 Series, Digital, 230 V

To achieve rapid data transfer between your control system and sensors, opt for this digital output module from Siemens. It's compatible with PLCs from the S7-300 range and converts the binary operating signal from the controller to a suitable format for the external component. As it has 16 digital outputs, there's enough room to connect multiple devices. With a permissible load voltage range of 79 to 264V AC, it's a versatile option that's not fussy about power supply. You'll find it ideal for contactors, motor starters or solenoid valves in your energy management system and water treatment facilities.

• Optocoupler between the channels and backplane bus reduces the risk of damage caused by electrical hazards
• Mountable in a vertical or horizontal position for flexible assembly
• Maximum response time of 300ms means you get rapid signal transmission

It has a diagnostic function for convenient monitoring. The LED indicator is designed to come on when a fuse is blown.