Continuously monitors and displays Voltage and amp draw (RMS).Multi-mode surge suppression. Automatic reset on power restoration. 10 second countdown startup sequence 128 second reset delay protects A/C compressor. New brighter LCD display (English). Includes anti-theft lock ring on cord. Compatible with 40301 Wireless LCD Display.

 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