modbus485噪声传感器是由485模块 JHM-M485+JHM-NF18 组成的一套测量设备。，MODBUS485接口输出,被动呼叫模式，地址、通讯波特率可灵活设定。模块过流、过压保护，防雷击及电涌破坏。

modbus485噪声传感器参数：

产品型号                                                       JHM-NS02

规格                                                                  80mmX25mm

测量误差                                                       +/- 1.5dB（2Khz80dB 点校正）

转换精度                                                          0.1dB

输出模式                                                        扩展 485

频率加权特性                                           A 加权特性

拾音器厂家                                                 东芝电容式（外披防风）

A 加权动态测量范围                            30dB to 120dB（自动换挡）

频率响应                                                       35 Hz to 20KHz

动态特性                                                       FAST

工作及存储温度                                      -10 -----60℃

工作及存储湿度                                        10 ----- 90RH%

电源标准                                                       DC9V—DC12V(波纹<0.5%)电流 30mA