MS8209 failed

I accidentially killed my favorite multimeter that had served me well for a long time. :-(
I was verifying another multimeter by comparing it’s reading to measurement made by this meter (that was checked to be accurate with a calibrator in 2020). My meter just went dead. New battery did not help.



Any repair tips or recommendations for a good replacement (I want one with light and sound measurement built in).


  1. Tomi Engdahl says:
  2. Tomi Engdahl says:

    Alternatives for new meter with light and sound measurement option:

    Mastech MS8229 Auto range Digital Multimeter DMM Meter 5 in 1 Multitester Light Sound Level Temperature Humidity Tester
    € 95,85
    Mastech digitaalinen yleismittari MS8229 CAT III 1000V

    Multimeter with Lux and Sound Pressure – Mastech MS8229 Multimeter Review

  3. Tomi Engdahl says:

    Smartphone vs. Real Meters for Sound and Light Measurement?

    Are there inexpensive alternatives to light and sound meters? How about a multimeter that will measure both lux and decibels? Or what about your smartphone? In this video, I will test if they are any good…

  4. Tomi Engdahl says:

    Mastech Ms8229 5 In 1 3999 Multimeter Tester Lux Humidity Sound Meter Backlight


  5. Tomi Engdahl says:

    Alternative from Biltema

    This is said to be same as this meter

    Triplett 9055 Series 6 in 1 EnviroMeter DMM

    The Triplett Model 9055 is a 3-3/4 digit (4000 count) high performance digital multimeter with an array of environmental functions. It offers over 50 measurement ranges including AC/DC Voltage, AC/DC Current, Resistance, Frequency, Capacitance, Temperature (Type K and ambient), Relative Humidity (RH), Light (LUX), and Sound (dBC). Additional features include an NCV Detector, Continuity, and Diode Test. The rubberized overmolded housing with built-in stand provides impact and drop resistance in a sleek ergonomic design, and the user-friendly Auto Power Off feature helps maximize battery life. With an industry leading CAT IV design, it provides superior resistance to damage from transient overvoltages in any demanding industrial settings. The Model 9055 is suited for a variety of industrial and residential applications such as security, home theater, electrical, HVAC installations and more. Includes test leads, alligator clips, Type K Temperature probe and 9V battery. 3 year warranty.

    Triplett 6-in-1 CAT IV 4000 Digital Multimeter and Multi-Tester – Sound Level, Light Level, Humidity, Temperature, AC/DC Voltage, AC/DC Current, Resistance, Continuity, Diode Test, Capacitance, Frequency, and Duty Cycle (9055)

    Triplett 9055 Series 6 in 1 EnviroMeter DMM

    9055 Series Features:
    - 53 Measurement Ranges
    - 3 3/4 Digit Resolution
    - 4000 Count Backlit Display
    - Auto Power Off
    - Low Battery Indicator
    - Auto Polarity
    - Capacitance and Resistance Ranges
    - Sound Level, Ambient Temperature, and Relative Humidity Meter
    - Light Sensor
    – Non-Contact AC Sensor
    – AC/DC Current Range
    – Shock Absorbing Case
    – Overload Protection
    – Double Insulated
    – Voltage Range up to 1000V

  6. Tomi Engdahl says:

    Looks as possible replacement:

    Digitaalinen yleismittari, 6-in-1
    Tuotenro. 17-338

  7. Tomi Engdahl says:

    The newly released MASTECH MS8229 DMM is an improved and modified version of the widely praised Mastech MS8209, it combines a multimeter, a sound level meter, thermometer, luxmeter, humidity meter all in one. Also it is packed with many nice features such as temperature & humidity display, sound and light warning for the jacks and back-lit LCD Screen.


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