Features...

• Computer controlled

• LEDs and audio

• Auto turnoff

• Low battery indication

• Indicates three states to reduce chance of errors. *

Functions...

• Open points: Lights and tone on (detects inductance)

• Closed points: Lights and tone off (detects short)

• Unknown state: Lights blinking and tone pulsing (detects neither inductance or short)

The unknown state, normally means magneto timer is disconnected from magneto.
Can also mean coil of magneto is missing or failure of magneto or magneto timer.
Device must detect inductance before indicating points open.

Device turns off after about 10 minutes of inactivity.
When battery is low device plays taps. then shuts off.

Download datasheet here...