The Digital Monitor AECM200206 constantly monitors voltage and frequency and also provides surge suppression. It also indicates potential shock hazards due to improper polarity and ground wiring. High or low voltage can damage your air conditioner, and other appliances. This compact, easy to use instrument is made with advanced microelectronics and provides accurate testing and monitoring of electrical outlets and systems. Its small size and rugged construction allows for convenient installation in an electrical outlet or use as a portable service tool. The voltage is measured as RMS which is much more precise than AC average or RMS estimation. RMS metering is the only method that can accurately measure all AC power sources. The RMS voltage and frequency readings are ideal for monitoring modified sine waves, such as solid-state generators, inverters, and Uninterruptible Power Supply (UPS) products.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov