The DTK-DF240M Deflector Series Rapid-Replacement surge protection module provides a new level of protection for 120VAC critical load circuits. The DTK-DF240M features an LED health status indicator that flashes and sounds an audible alarm on the modules’ wall mountable base when protection has been compromised. Its patented Rapid-Replacement design offers quick and easy installation with no additional wiring required. Simply remove the compromised module from its base and replace it with a new one in seconds.