UM-ALS20 Ambient Light Sensor with RS485 Modbus, Analog Voltage, Analog Current Interface Time:2019/12/06 View:3094 Category:Resources User Manual Software UM-ALS20 Ambient Light Sensor PREV: UM-Daisy20 Compact Weather Station with RS485, Modbus NEXT: UM-Giant521 Weighing Transmitter with RS232/RS485, Modbus