• Country
• Hong Kong

• Manufacturer / Brand
• Precision Mastech Enterprises Co., Ltd.; Hong Kong

• Year
• 1990 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 193842

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / 9 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Digital Multimeter M-830B - Precision Mastech Enterprises

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 70 x 126 x 24 mm / 2.8 x 5 x 0.9 inch

• Notes
• Five DC voltage sections 200 mV, 2000 mV, 20 V, 200 V and 1000 V; two AC voltage sections 200 V and 700 V; four DC current sections 200 µA, 2 mA, 20 mA and 200 mA; five resistance sections 200 Ohm, 2000 Ohm, 20 kOhm, 200 kOhm and 2000 kOhm; separate 10 ADC section input; HFE transistor NPN/PNP from 1 to 1000; diode check, test current 0.8 A, test voltage 3 V; manual OFF switch; battery type 6F22(9 V) x 1, power supply.

• Net weight (2.2 lb = 1 kg)
• 0.170 kg / 0 lb 6 oz (0.374 lb)

• Source of data
• -- Original prospect or advert

• Author
• Model page created by Emilio Focosi. See "Data change" for further contributors.

• Other Models

• Here you find 7 models, 6 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Precision Mastech Enterprises Co., Ltd.; Hong Kong