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Table 2 List of sensors/transducers

From: Surveillance and security: protecting electricity utilities and other critical infrastructures

Sensors/Transducers (van Gulijk et al. 2012; Bellanova et al. 2012; Guelke et al. 2013; Gulzar et al. 2013; Sutor and Reda 2008; Meggitt et al. 1999)

Audio and acoustic sensors

Binary sensors

Explosives detector

Radio frequency identification (RFID)

Gas chromatography mass spectrometry detector

Heat sensors

Infrared sensors

Metal detectors

Microwave sensors

Radar sensors

Under sea detectors

X-rays detectors