# How to add a LED to a Multimeter for use it with the buzzer in continuity testing?

I want to add a notification LED to my digital multimeter which i need to glow with the multimeters inbuilt speaker (piezo/buzzer/beeper) while in Continuity testing mode.

MM Model : DT830D

If i have no other option except to replace the speaker with the LED then also please guide.

To make it simple i was thinkng to built something that will be connected in parallel or series with the MMs speaker.

or is this possible to built a circuit that will only glow the led when the MM beeps.

• If the meter is to be used for commercial purposes, be sure to check your local laws on equipment modification. Tampering with a multimeter in any way will likely void both warranty and all certifications. – K H Aug 25 '18 at 0:53