Скачать или смотреть DT-830B Digital Multimeter – Fitting an Internal Buzzer 2025 16.9 Format (Fills Screen)

We think this meter is suitable for low voltage applications (up to 50V), though it can operate at 240VAC; use above 50V is not recommended due to lack of safety features. We have fitted rubber feet to the base …It reliably measures resistance up to 2000KΩ, DC/AC voltage up to 50V, current 200mA, up to10A and includes Diode testing. ( Did not bother with transistor testing) To add a 3V DC buzzer. Connect its positive lead to one side of R4 and the negative to the VΩmA middle terminal. Use a 70mm blue wire for negative and a 135mm orange wire for positive. Hold Buzzer in place use double sided tape. The buzzer works during resistance measurement up to 500Ω, (Ideal to have maximum say 50Ω) but changing this limit is currently unresolved by us. If you have a fix let us know …