The document describes a wireless peer-to-peer communications system with 3 base units (A, B, C) that can control and monitor a water pump motor and flow rate. Base Unit A receives a 4-20mA flow signal and motion detection input. It communicates with Units B and C to start, stop, and control the pump motor's speed. The MicroLogix PLC receives data from the flow computer and motion detector via Base Unit A to monitor process variables and control the base units using Modbus communications.