Area Remote Terminal Unit (A-RTU) is a stand-alone, programmable cluster controller for up to eight (8) remote terminal units (RTU). The A-RTU provides an alternative to PC based Monitor and Control Systems without sacrificing future expandability to a System Control Computer (SCC) or basic functionality within the Telemetry/SCADA Monitor and Control System.

• Remote Terminal Units (RTU) collect, store and forward information and/or monitor and control remote devices on a peer-to-peer communications scheme. This RTU utilizes an open architecture and open communications protocol known as OpenLINK™ and can be easily networked by radio, phone, cellular, RS 232 cable, RS422/IEEE 485, fiber optic, Ethernet, or internet. RTU Models available are Expandable (E-RTU), Midi (D-RTU), Mini (M-RTU), Micro (µRTU), Solar (S-RTU), or custom manufactured RTUs. PLCs are also available.
• Auto Alarm Phone Dialing System with or without a synthesized voice or simply called “Dialer” resides either within the System Control Computer’s Base Radio Modem or within a A-RTU System Controller. The Dialer software interface called LVDialer™ resides on the System Control Computer (SCC). If an A-RTU System Controller, the Dialer’s setup functions are accessible through the System Controller’s LCD Display and Keypad.
• Base Radio Modem (BRM) is serially connected to the System Control Computer (SCC) and is the radio communications to all remote sites within a Telemetry/SCADA System. LVMAC™ software developed by DFA is the user software interface to the Base Radio Modem radio communications functions and resides on the System Control Computer (SCC).
• Radio Repeater is used to relay messages outbound and inbound within a radio communications path due to geographical high and low spots interfering with signal transmission strength within the path. Within a DFA Telemetry/SCADA System, each RTU is a repeater with “store and forward” capabilities. However, there may still exist terrain which requires a repeater within a radio communications path.
• Control Panels – motor or pump.
• Controllers – for local control.
• Electrical Panels or Electrical Controls to UL specifications.
• Circuit Boards. The DFA manufactured printed circuit boards which are used in the DFA RTU are stocked inhouse and can be delivered next day.
• Custom Design of Electronic Products.