WE BUY USED FLOW METERS
This ad is for one Teledyne ISCO 2150 Area-Velocity Flow Module.  I have I have approximately over fifty, 2150 modules, and half a dozen 2110 Ultrasonic modules with Ultra sensors that look like new.  I will need a few days for testing prior to shipping.  These modules were manufactured between 2008 and 2012.  I will test to make sure they are working.  
 
I have approximately 50 2103CI, cellular Modems. They stopped this cellular service in most areas.  Check with your carriers before buying these.    
 
I also have, 2110 Ultrasonic modules, 2110 sensors, battery modules, handles and limited 2150 sensors. ADS, meters, Marsh McBirney meters, Blue Siren meters more ads to come. 

If are familiar with ISCO, these 2103C modems run on 2G I believe.  2G is being phased out by many phone companies, but may still be active in limited areas.  The 2103CI is next.  Check you cell service providers before purchasing.