WE BUY USED FLOW METERS
This ad is for one 2110 Ultrasonic Flow Module, one Ultrasonic sensor, one battery module and handle.  I have I have approximately five 2110 modules, and sensors that look like new.  I will need a few days for testing prior to shipping.  
 
I also have 2103CI 3G ISCO cellular modems.

I have approximately 50 2103CI,

between 50 and 100 2103C cellular modems, 
 
See separate advertisements for 2103CI and 2103C

I also have 2150 A/V modules, 2110 Ultrasonic modules, battery modules, handles and limited sensors. ADS, meters, Marsh McBirney 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.  The 2103CI 3G should still be active in many areas.  Check you cell service providers before purchasing.