Onboard noise module, according to national standard GB/T 3785.1-2010 "Electrical Acoustic Sound Level Meter Part 1:Specifications" and International Standard IEC 61672-1: 2002 for Class 2 Class X sound level The required design of the meter is mainly used for on-site real-time measurement of various types of noise such as environmental noise, traffic noise, workplace noise, construction noise, and social life noise. With this module, customers no longer have to worry about complicated noise signal processing, they can focus on their areas of expertise, and create value for their customers more quickly.
PCB onboard installation.
30~120dBA wide range, 20~12.5KHz wide frequency measurement.
High performance pre-polarized back-polar electret condenser microphones with wide dynamic range and stable performance.
Output interface TTL or RS-485 factory optional.
With slow and fast measurement two modes to meet different customer requirements.
Power supply 4.5V~5.5VDC and 10~28VDC are optional. Operating voltage: 4.5-5.5V (default), 10-28V (optional) Power consumption: 18.9mA@5V 31.0mA@12V 27.8mA@24V Transmitter circuit operating temperature: -20°C-+60°C, 0%RH-80%RH output signal: UART (T) Output voltage: 0-3.3V Input voltage: 0-3.3V compatible 5v RS-485: ModBus-RTU Communication Protocol Analog output: Output voltage: 0-3V corresponds to 30-120dB
The supply voltage is 4.5-5.5V , UART (TTL) output