The Aquamonix range of 2-Wire Translators are marketed globally under Tonick Watering.
Tonick translators provide both the power and signaling to a range of field devices via a 2-wire pathway, and are capable of complex control and data collection. Tonick translators can be connected to your control system via a serial MODbus port or a simple multi-wire digital input interface.
deVINCI 2-Wire Encoder
BT2 TBOX serial translator
BT2 Eurocard serial translator