The HE leak detection machine features dual functions: leak detection and real water testing. It can accurately locate leak points in defective products and simulate underwater stress to verify their waterproof performance. The equipment uses digital display pressure and timing with an accuracy of 0.2% F.S., and the fully transparent cylinder body facilitates observation. Rotary adjustment and lever switches prevent accidental activation, and foolproof and overpressure protection functions ensure safety and reliability. It effectively improves maintenance efficiency and reduces waterproof verification costs, making it a highly efficient choice for airtightness and waterproof verification.