The MP Electronics Duplexer Controller (010-120-122P) is a low-cost, SCADA-ready pump control solution designed for duplex lift station applications. Engineered for reliability and ease of integration, this controller uses Modbus RTU communication to support modern automation and monitoring systems.

This dual pump controller automatically alternates pumps to ensure even wear while providing advanced level control using either float switches or conductance probes. Built-in delays, alarm outputs, and LED indicators deliver dependable operation in wastewater and industrial pumping environments.

With plug-in design, solid-state circuitry, and fail-safe operation, the MPE Duplexer Controller is ideal for municipalities, building systems, and industrial pump control panels.

 Key Features

• SCADA-ready with Modbus RTU protocol
• Controls and alternates two pumps (duplex system)
• Compatible with float switches or conductance probes
• High-level alarm relay with visual indication
• LED status indicators (power, level, pump call, alarm)
• 10-second startup delay & 5-second lag delay
• HOA (Hand-Off-Auto) switches & lead/lag selector
• Fail-safe operation with surge-protected outputs
• Plug-in base for easy installation

 Specifications 

• Model: 010-120-122P
• Voltage: 120V AC, 50/60 Hz
• Outputs: 2 (SPST, 6A)
• Phase: Single Phase
• Communication: Modbus RTU (RS232 optional)
• Inputs: Float switches or conductance probe
• Operating Temp: -20°C to +60°C
• Mounting: Plug-in base

Applications 

• Wastewater lift stations
• Duplex pump control panels
• Industrial fluid handling systems
• Municipal water systems
• Building automation / SCADA systems