Lennox 81M11 Phase Monitor

The Lennox 81M11 Phase Monitor is a device used in various HVAC equipment to safeguard electrical components and ensure the system’s efficient operation. It continuously monitors the voltage and frequency of the electrical supply, ensuring all three phases are present and within the acceptable range. By detecting phase loss or voltage imbalance, it prevents potential damage to electrical components and halts the system before malfunctions occur. The Lennox 81M11 Phase Monitor is typically a small device, measuring around 2 x 2 x 1.25 Inches, and is compatible with a range of voltages (208-240V) and frequencies (50/100 Hz). In conclusion, the Lennox 81M11 Phase Monitor offers a vital layer of protection for your HVAC equipment, promoting its longevity and preventing costly repairs.