Alerts close to the charging unit by pronouncing and flashing; It is in standby condition without a power switch, making it ideal for preventing human errors; For preventing electric shock caused by misperperception of high-pressure live workers; Depth: 0.5 inches (13 mm); Volume (dB): 65; Alarm Starting Distance: 6.6 kV-60 cm Height: 40 mm / Power Supply: 1 mm (40 mm / Power Supply: 1 mm) (included); Frequency (Hz). ): 50/60 Hz; Dimensions (W x D x H): 1.5 x 0.5 x 1.6 inches (37 x 13 x 40 mm).