[Important Note]-This RPM signal pick up must works with automotive multitester meter or oscillograph with signal input function, for engine systems diagnosis and adjustment.
[Perfect Engine Analyzer]-Inductive clamp lead is compatible to be used with for Automotive BT-770K, BT-90K, BT-6688B, and measure car frequency 10-400Hz and tach range 300-1200 RPM .
[Versatile Clamp Hole]-To measure secondary end conductors of high voltage ignition coil spark, bigger hold is more useful for various size of wires.
[Easy Operating Steps]-Clamp the wire with the mark "→" on the inductive pickup tool pointing to the for engine speed measurement.
[Notice in Measurement]-The distance between the and the clamp of the instrument must be less than 3.93 inch (10cm) during test, and the ignition frequency of the engine ignition system must be between 10Hz and 400Hz.

Operating temperature: -30℃ to 80℃
Relative humidity: Less than 80%
Sensing Mode: Magnetic Induction
Applicable Engine: Ignition Gasoline Engine
Rotational Speed Measuring Range:300 RPM - 1200 RPM
Operating Instruction:
Step 1. Connect the clamp of the instrument to a wire with the mark on the instrument pointing to the .
. Connect the plugs of the instrument to the input terminals of the automotive meter.
(The black plug of this instrument should be connected to COM jack of the automotive meter.)
Set the automotive meter in corresponding measuring range.
Then you can read the RPM value on the multimeter display.
If no reading is received, unhook the clamp, turn it over and connect again.
Colour:Black
Material:Plastic

Package Contents:
1 x BT-705A Automotive Signal Pick-Up(The words on the product due to different p