So that rescuers can detect trapped people in the earthquake, building collapse, debris flow, avalanche and other disasters in a few minutes. The device consists of an infinite detector transmitter and a palmtop computer. It detects respiratory activity within 4.6 meters and searches for target movement within 6 meters. Strong shell, waterproof. Detection accuracy: about 1 meter. Detection launcher: Survivor location can be detected even when breathing or heart activity is extremely weak.
