Check the listing for details. 8-Channel Temperature Acquisition Module RS485 MODBUS Communication-WP3066ADAM. Condition: New. Listed at 54.16 USD. Title： DS18B20 Temperature Acquisition Module 8 Channels RS485 MODBUS Communication-WP3066ADAM Specification: Temperature input channel: 8 channels (DS18B20 temperature sensor)Temperature measurement range: -55～125℃Temperature measurement accuracy: ±0.5℃Temperature resolution: 0.1℃Effective connection distance: ≤ 25 meters (ordinary line)Operating temperature range: -20～70℃External power supply: DC 9V～30V/2WIsolation Protection: 1500VDCInstallation method: standard DIN rail installation or screw installationDimensions: 125×73×35mm Product Description: ⚫ 8-channel temperature sensor DS18B20 input⚫ Using RS485 MODBUS RTU standard communication, it can be networked with configuration software, PLC, industrial touch screen, etc.⚫ With communication status indicator⚫ The communication circuit adopts lightning protection and anti-interference design⚫ Can be widely used in signal acquisition and control of industrial field equipment Interface Definition: AVcc: External power input positive terminalAGnd: External power input negative terminalVdd: +5V, connected to the temperature sensor DS18B20 pin VddData1: Connect to the first channel temperature sensor DS18B20 pin DQData2: Connect to the second temperature sensor DS18B20 pin DQGnd: 0V, connected to the temperature sensor DS18B20 pin GndVdd: +5V, connected to the temperature sensor DS18B20 pin VddData3: Connect to the third temperature sensor DS18B20 pin DQData4: Connect to the fourth temperature sensor DS18B20 pin DQGnd: 0V, connected to the temperature sensor DS18B20 pin GndVdd: +5V, connected to the temperature sensor DS18B20 pin VddData5: Connect to the 5th channel temperature sensor DS18B20 pin DQData6: Connect to the 6th temperature sensor DS18B20 pin DQGnd: 0V, connected to the temperature sensor DS18B20 pin GndVdd: +5V, connected to the temperature sensor DS18B20 pin VddData7: Connect to the 7th temperature sensor DS18B20 pin DQData8: Connect to the 8th temperature sensor DS18B20 pin DQGnd: 0V, connected to the temperature sensor DS18B20 pin Gnd485A: RS485 signal A+485B: RS485 signal B- Communication Indicator Description: ⚫ After the module is powered on, the communication indicator turns green⚫ During module communication, the communication indicator flashes⚫ When the module receives the correct command, the communication indicator turns green⚫ When the module receives an error command or a command other than the address of the module, the communication indicator light turns red Please Note: This module can only use DS18B20 digital temperature sensor, can not connect other types of temperature sensors such as PT100 thermal resistance and thermocouple Package: 1XDS18B20 Temperature Sensor