Help with choosing a modem

hello there , i am searching for a modem that can be part of a remote tank water monitoring system. i use a pressure sensors with an output of 4-20mA ,analog . do you know which of the sierra witless modems has an analog output and can work with 4-20mA ? i was looking at the GL 7500 and the FX series but could not find any references . will be happy to get some help on this matter . many tnx .


The FX30 has one IoT connector card port and there are a number of 3rd party companies developing interface cards. Please look at Digikey:

Talon Communications and Bipom might be developing an 4-20 mA IoT card for the FX30.


Hi John , many tnx i will look this one up