A wearable AC voltage detector comprising: a circuit board assembly comprising a dielectric substrate and a plurality of electronic components mounted to the dielectric substrate, the plurality of electronic components comprising voltage detection components, a power supply, and an annunciator; a wrist-band comprising a first segment and a second segment, each segment comprising an outer layer (110a, 110b), a flexible circuit board comprising a monopole aerial (120a, 120b) printed on a dielectric substrate, a dielectric layer (130a, 130b), an inner layer (140a, 140b), and a wrist-band segment connector, wherein each segment has a proximal end and a distal end; and a ground button, wherein: the proximal end of each segment is physically connected to the circuit board assembly, the distal end of each segment is physically connected to the wrist-band segment connector, the aerial of each segment comprises conductive material printed on the dielectric substrate of the segment in a serpentine pattern and is electrically connected to the voltage detection components, the ground button is electrically connected to the voltage detection components, the wrist-band segment connectors of each segment are configured to attach the distal end of the first segment to the distal end of the second segment such that when the voltage detector is worn around a user's wrist the ground button is held in contact with the user's skin, and the plurality of electronic components and aerials work cooperatively to alert the user of a proximity of the AC voltage. a circuit board assembly comprising a dielectric substrate and a plurality of electronic components mounted to the dielectric substrate, the plurality of electronic components comprising voltage detection components, a power supply, and an annunciator; a wrist-band comprising a first segment and a second segment, each segment comprising an outer layer (110a, 110b), a flexible circuit board comprising a monopole aerial (120a, 120b) printed on a dielectric substrate, a dielectric layer (130a, 130b), an inner layer (140a, 140b), and a wrist-band segment connector, wherein each segment has a proximal end and a distal end; and a ground button, wherein: the proximal end of each segment is physically connected to the circuit board assembly, the distal end of each segment is physically connected to the wrist-band segment connector, the aerial of each segment comprises conductive material printed on the dielectric substrate of the segment in a serpentine pattern and is electrically connected to the voltage detection components, the ground button is electrically connected to the voltage detection components, the wrist-band segment connectors of each segment are configured to attach the distal end of the first segment to the distal end of the second segment such that when the voltage detector is worn around a user's wrist the ground button is held in contact with the user's skin, and the plurality of electronic components and aerials work cooperatively to alert the user of a proximity of the AC voltage. the proximal end of each segment is physically connected to the circuit board assembly, the distal end of each segment is physically connected to the wrist-band segment connector, the aerial of each segment comprises conductive material printed on the dielectric substrate of the segment in a serpentine pattern and is electrically connected to the voltage detection components, the ground button is electrically connected to the voltage detection components, the wrist-band segment connectors of each segment are configured to attach the distal end of the first segment to the distal end of the second segment such that when the voltage detector is worn around a user's wrist the ground button is held in contact with the user's skin, and the plurality of electronic components and aerials work cooperatively to alert the user of a proximity of the AC voltage.