The FlashFog relay is a dry contact relay designed for remote control of 12-24 V⎓ power supplies, enhancing smart security systems. It enables automatic water shutoff to prevent flooding caused by washing machine failures or pipe bursts, with remote or scheduled control. It supports seamless operation of automatic gates and barriers, allowing app or button control for improved convenience and safety. Additionally, it controls electric locks to secure premises remotely, with options to block access via alarm or night mode. The relay also integrates with security smoke cannons, triggering them upon detector alarms or DoubleButton activation for immediate response.