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 for single parameter monitoring of total suspended particulate (TSP)is based on our own Microdust, supplied with heated inlet and logger which allows data transfer. The complete system 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.