... than 5s3. Adopting inset crystal hardware clock circuit, with temperature compensation circuit to ensure under the normal working ... (-30ºC--80ºC) LCD display ; 2. 8 digit LCD display, 6 integer and 2decimal; 3. Display the data of current date, ... rate 1200bps/s, semiduplex , RS485 communication circuit is separated with inner meter circuit, communication distance:1200m. Electric parameter is ...