... communication 3. Power fail memory 4. 4-20mA/0-10V output flow meter Flow Totalizer / Flow MeterSummary:LP- 50(50K) Flow ... : K, E, J, TCurrent: 0-10mA, 4-20mA3. Output signal: instant flow transform output current 0-10mA or 4-20mA which can ... freely.4. Alarm output: relay output AC220V/3A. Output power: DC12V/50mA, DC24V/50mA.5. Communication interface: RS232, RS485 photo-isolated.6. Display modes ...