Combined with magnetoelectric geophone of special structure and piezoelectric detector, it is one kind of seismic exploration sensor used for undersea cable. Operating water depth is 0.5-200 meters.

Specification：
1. Magnetoelectric geophone:
Natural Frequency: 10 Hz ±3.5%
DC Resistance: 395Ω±3.5%
Sensitivity: 27.5V/m/s ±3.5%
Damping: 0.68±3.5%
Distortion: ≤0.075%

2. Piezoelectric geophone:
Natural Frequency: 10 Hz ±15%
DC Resistance: 145Ω±15%
Sensitivity: 14V/Ba±15%
Dimension: Φ54 x 300mm
Weight: 2.5 Kg