Visual, audible, smart. DITEK's DTK-DF120S1 sets a new standard for 120V AC power surge protection. Its patented design provides maximum critical load protection by minimizing AC supply voltage spikes and isolating incoming surges that originate from lightning or other sources. Each DF Series module features an LED health status indicator that flashes and sounds an audible alarm when protection has been compromised; and the devices wall-mountablebox includes dry contacts for remote notification when service is required. � Protects 120VAC Single Phase Critical Loads � Audible alarm sounds when protection is compromised or protection module is removed � Rapid-Replacement modules for ease of installation. � Dry contacts for remote notification when service is required � UL1283 EMI/RFI noise filtering ensures clean power for connected equipment � Separate LED indicators for power, ground and protection status � Multi-stage hybrid circuit design for fast response and best protection � Accepts both flexible and rigid conduit � No additional enclosure require