The AMP-3 module connects the Aqua-x Pro to a set of precision pH / EC & temperature probes to constantly measure the pH / EC & temperature of the water being sampled. The AMP-3 works with the TrolMaster PCT-1&2 and the PPH-1&2 probes. Once connected to the Aqua-x Pro, the AMP-3 will display the sensor data on the Aqua-x Pro and on the APP. The minimum and maximum “limits” can be set on the Aqua-x Pro providing 24/7 notification of pH / EC or temperatures that are out of limits.