ทะเลพื้นที่ / แม่น้ำ / ทะเลสาบ / บึงประเภทใต้น้ำ hydrophone HJ ตรวจจับ piezoelectric

Underwater Hydrophone HJ type piezoelectric detector Hydrophone Dimensions: 1 Length:142mm (with a protective shell for 152mm) 2 Diameter: Φ58mm (with a protective shell is Φ68mm) 3 Cable: Φ7.8mm Description: 1 Red for positive output terminal cables. 2 With the depth of change, change sensitivity range of less than 1.5db. 3 Hydrophone with outgoing head of 1 meters. External waterproof connector is optional. Can qualify head length changes according to the user's requirement