Siemens SAG21 Automatic Synchronizing Indicator 400 450v 50 60hz Tripp.lite Simple to Install: The SMP 2LB 20305 Simple to Install: The SMP 2LB is simple to put install and combine into the pressure observing framework because of the readable associations and non convoluted setup as it is able to perform both stable and reliable in severe industrial conditions } Item Details Product Siemens SAG21 Automatic Synchronizing Indicator Manufacturer Siemens Model SAG21 Type Automatic Synchronizing Indicator Voltage Rating 400 450V Frequency Rating 50 60Hz Clear and easy to use interface : It is equipped with clear displays and controls to allow easy monitoring and operation