The Guardian for noise and dust is a cost effective, fixed, long duration monitor for noise and dust offering 24/7 monitoring. Based on our own CEL-600 series sound level meter it is with a Type 1 microphone, logger with data transfer and outdoor protection for the microphone. The parameters that are measured are LAeq, LAFmx, LAF10, and LAF90 (additional parameters available on request). The dust element, factory configurable for single parameter monitoring of PM10 or PM2.5 using a sharp cut cyclone head, is based on our own Microdust, supplied with heated inlet and logger which allows data transfer. The complete system, including the measurement of wind speed and direction is housed in a weatherproof enclosure. The unit runs on mains electricity. (110V or 240V) The data is transferred via GPRS to a dedicated, secure, website www.dataview247.com. This can be viewed in any web browser, via private login, showing real-time and historical data and in addition real-time alarms can be set up via email.