... ,RS485 4.support remote control water flow meter (LCD display),water level meterSBL digital target flow meter is improved from traditional flow ... range can be changed by replacing target according to need. LCD display.4-20mA, 0-10V, impulse, and RS485 outputs.Easy ... batter; external power supply of 24VDC; 220VAC (only for separate digital tube)Output formsSite display reading; 4~20mA (2-wire system ...