Lennox 81M11 Phase Monitor

The Lennox 81M11 Phase Monitor is an electrical component used in most HVAC equipment to protect electrical parts as well as optimize the performance of the system. This ensures that voltage and frequency of the electrical supply are well monitored and controlled and more especially that the three phases are present. It prevents damages to electrical components by sensing phase loss or voltage imbalance and stops the system before failure. This Phase Monitor is normally a compact equipment, with the size of 2 x 2 x 1.25 Inches, and it has the voltage of 208-240V and the frequency of 50/100 Hz.