Yes, semi-stationary and stationary surveillance systems are often used where there is no mains connection. Sometimes, surveillance systems must be used covertly. This poses a challenge to the self-sufficiency of a power supply. SFC offers a power supply for stationary and undercover use of surveillance applications and law enforcement authorities. SFC fuel cells reliably supply power for weeks without a mains connection or the need for user intervention – silent and, if required, undercover, vandalism-proof and even for burying.