Adjustable negative-pressure control The unit uses a round vacuum pressure gauge to clearly display the negative pressure value. The patient or caregiver can set the suction level for sputum clearance according to the situation. Maximum negative pressure exceeds 0.075 MPa. The wider adjustment range enables faster and cleaner sputum suction. Large-capacity concealed reservoir 1000 ml reservoir with a concealed, buried design and a novel structure. The round vacuum gauge is integrated into a full plastic shell for a compact, clean appearance and easy maintenance. Soft PVC suction hose Sterilised, quality-assured suction hose made of soft PVC and packaged in sterile disposable packaging to help prevent cross infection. Upgraded noise reduction technology Built-in silencer plus multiple noise reduction methods deliver less than 65 dB of noise, enabling a quieter environment for the patient and family. Applications - Home care for elderly or post-operative patients requiring sputum suction, with the flexible negative-pressure control supporting individual needs and nighttime use. - Hospital wards or clinics needing efficient, hygienic sputum suction with a large reservoir for extended use. - Caregivers seeking a quiet, reliable suction device that minimizes disturbance in shared living spaces.