Description:  Working voltage: DC 8-25V(Recommend DC 12V).  Working current: 8-13MA.  MODBUS RTU protocol, 03 read command, 06 write command.  Serial port baud rate: 9600 (default), N, 8, 1.  By modifying the 485 address, up to 247 modules can be cascaded. (more than 16 please use R485 repeater) Can read temperature and PT100 resistance value.  Adapted sensor: PT100 3-wire or 2-wire sensor.  Temperature measurement range: A version -20℃ to +400℃; B version -20℃ to +220℃. It is recommended to select a version with a smaller range within the range that meets the measurement.  Temperature measurement accuracy: 1%.  Size: 60 X 30 X 16MM.  Weight: 16g.    Specifications: Probe Diameter: 6.5mm.  Probe Length: 30mm.  Probe Material: Stainless steel.  Cable Length: 0.5M.  PTFE sheath 3-Wire type.  Temperature -200~550℃.  Shell:   Material: ABS.  Outer diameter: 73*36*24MM.  Inner diameter: 70*33*21MM.  Weight: 16 grams.     Package included:  (optional) A Version (-20~+400℃):  1 x A Type Acquisition Module.  B Version (-20~+220℃):  1 x B Type Acquisition Module.     PT100Probe version: 1 x PT100 Probe.  Shell version:  1 x Shell