Except for their hard silver contacts, all RZ7-FE timing relays are built with solid state surface mounted electronics and are accurate to within one percent.
Their ruggedness and accuracy is due to the thorough testing of function, timing characteristics and surge voltage strength performed on each device
prior to shipment. In addition, RZ7-FE relays function reliably from 15% under rated operating voltage to 10% over rated operating
voltage (AC). Voltage tolerance is even greater in DC applications
