modbus485噪聲傳感器是由485模塊 JHM-M485+JHM-NF18 組成的一套測量設備。，MODBUS485接口輸出,被動呼叫模式，地址、通訊波特率可靈活設定。模塊過流、過壓保護，防雷擊及電涌破壞。

modbus485噪聲傳感器參數：

產品型號                                                       JHM-NS02

規格                                                                  80mmX25mm

測量誤差                                                       +/- 1.5dB（2Khz80dB 點校正）

轉換精度                                                          0.1dB

輸出模式                                                        擴展 485

頻率加權特性                                           A 加權特性

拾音器廠家                                                 東芝電容式（外披防風）

A 加權動態測量范圍                            30dB to 120dB（自動換擋）

頻率響應                                                       35 Hz to 20KHz

動態特性                                                       FAST

工作及存儲溫度                                      -10 -----60℃

工作及存儲濕度                                        10 ----- 90RH%

電源標準                                                       DC9V—DC12V(波紋<0.5%)電流 30mA