Zeus Omega Hall Effect Sensor — Control Module's A2240 & A2241

The Zeus Omega Hall Effect Sensor - Control Module A2240 & A2241 are a plug-and-play accessory designed for the ARCO Marine Zeus Omega Alternator Control System. It clips seamlessly around your main battery cable to provide contactless, real-time current tracking directly at the central Zeus Omega Control Module AZCM. By measuring the magnetic field generated by flowing electricity, it delivers precise State of Charge (SOC) monitoring and system diagnostics to the ARCO smartphone app. This completely eliminates the need to install, cut, or wire a traditional, heavy electrical shunt into your battery bank. ARCO Marine offers two distinct Hall Effect sensors for the Zeus Omega setup. They use the exact same contactless technology but serve completely different diagnostic roles based on where they plug in and what they measure: Control Module Sensor (A2240) Alternator Drive Module Sensor (A2241) Primary Location Connects to the Control Module near the battery. Primary Location Connects to the Alternator Drive Module (ADM) at the engine. What It Measures Total Battery Current (Net input and output). What It Measures Alternator Output Current exclusively. Main Purpose Calculates State of Charge (SOC) and broad battery health. Main Purpose Monitored for alternator performance and charging efficiency.