2CH -55 to +125C Modbus Temperature Sensor Module DS18B20 RS485 Adapter Board for PLC Paperless Recorder Thermostatic Controls

N4DSA02 is a 2-channel DS18B20 Modbus adapter newly designed by eletechsup. It can directly replace R46CA01. It not only fixes the BUG of R46CA01, but also adds an extra channel and more register configuration functions. It is a DS18B20 adapter with high cost performance.  Description :Working voltage: Power Supply 1 DC 6-25V; Power Supply 2 DC 3.7-5VWorking current: 6-7MANumber of acquisition channels: 2 channelsMODBUS RTU protocol, 03, 04 read commands, 06, 16 write commands.Serial port baud rate: 9600 (default), 1200-115200,N, 8, 1By modifying the RS485 address, up to 247 modules can be cascaded (more than 16 please use R485 repeater)Adapted sensor: DS18B20 Temperature SensorTemperature measurement range: -55°C to +125°C(-67°F to +257°F)Size: 25.8 X 15.2 X 3.5MM(No Pin),25.8 X 15.2 X 11MM(With Pin)Weight: 1.8g(No Pin),2.4g(With Pin)MODBUS RTU Command :''N4DSA02 N4DSB03 MODBUS RTU Command (OLD)'',Compatible with R46CA01 Command''N4DSA02 N4DSB03 MODBUS RTU Command (NEW)'',New users are advised to use new commandsThe recommended lead length for DS18B20 is within 15 meters.The recommended RS485 bus length is within 100 meters.If communication fails, please short the RES jumper for 5 seconds to restore the factory settings. Typical application:Thermostatic ControlsIndustrial SystemsConsumer ProductsThermally Sensitive SystemsIndoor and outdoor temperature measurementTemperature in vegetable gardenWeather forecasting, and monitoringTemperature in Computer RoomWarehouse temperaturePaperless recorderPLC analog expansion board