Specifications:
-dB(A)1m 120±2.
-Rate HZ 600±20.
-Transmission distance Φ 2500M.
-Material Aluminium.
-N.W 7KG.
-Dimension 300*300*400mm.
Operation steps:
1, Lay the base flat on a fixed platform;
2, Align the rocker arm to the screw holes and tighten it clockwise;
3, Grab the grabbing handle in left hand and open the air door (adjust the air door according to the direction of motion to control volume of the sound);
5,Turn the rocking handle clockwise with right hand till you hear the sound