The SC932A is used to interface a Campbell Scientific datalogger to a modem that is configured with an RS-232 DCE serial port. The SC932A provides true RS-232 signal levels and two-way communication.

Features
Used to connect an RS-232 modem to a datalogger
Commonly used with: 
Short haul modems
Fiber optic modems
Satellite transmitters
Cellular modems
Spread spectrum radios
Does not support one way output or printers
Specifications
Communications Rate: up to 115,200 bps 
Power Requirements 
Source: Datalogger’s 5 V supply 
Additional Current: Up to 10 mA may be used by the connected DCE device 
Operating Relative Humidity: up to 95% non-condensing
Producing Area:USA