The testo 300 FGA 'Smart' upgrade set allows connectivity to the testo Smart probe range. You can perform up to four additional wireless measurements in parallel to your exhaust gas measurement . Using the testo bluetooth adaptor supplied in the set, switch on the individual Smart Probes and they will automatically connect to your flue gas analyzer. All parallel measurements are also automatically displayed on your testo 300 and can be started and stopped simultaneously. Via the connection to the Smart App, the measurement, documentation and data transfer of all parallel measurements is carried out in a fast and professional manner.