KNOCKBLOCK G4+

Listen to one or two knock sensors Special filtering design improves signal to noise ratio Can be used with earbuds, earphones, and noise canceling ear muffs Long life lithium rechargeable battery Rugged CNC aluminum enclosure Flying lead headphones connector Can be used with all OEM knock sensors Can be used to interface directly to a laptop for recording of engine noise or knock sensor frequency analysis (using PCLink G4+) Operating   Install the knock sensor/s in a suitable location on the engine (typically on a solid mounting point on the block near the cylinder head) If only using one sensor, leave the unused sensor cable disconnected Turn the volume control clockwise until it clicks. The LED indicator will turn blue when the KnockBlock is operating Turn the volume to the minimum setting (most anti-clockwise) Connect headphones to the 3.5mm audio jack Run the engine and carefully increase the volume (clockwise) until engine mechanical noise can be heard. Adjust to a comfortable