Multimeter DT-830A, DT-830B, DT-830D, DT-832, DT-838, DT-838C comparison

Some kind of simple comparison of these multimeters and what features they have.

Basic summary of the models

There seems to be 2 common top models, DT-832 with a 50Hz square wave generator and DT-838 that instead has a temperature sensor.

There is also DT-830D that is like DT-832, but only some has the 50Hz square wave generator.

Detailed summary

DT-830A
  DCV 200m-500
  ACV 200-500
  DCA 2000μ-200m
  No temperature sensor in C
  Square wave generator 50Hz
  BAT 1.5V 9V
  Diode
  Ohm 200-2000k
  No probe sockets, probes not detachable
  No buzzer speaker

DT-830B
  DCV 200m-1000
  ACV 200-750
  DCA 2000μ-200m + 10 (some are labeled 200µ instead of 2000µ)
  hFE NPN PNP
  No temperature sensor in C
  No square wave generator
  Diode
  Ohm 200-2000k
  3 probe sockets - 10ADC, V/Ohm/mA, COM
  No buzzer speaker

DT-830BL
  Has backlight
  ...
  
DT-830D
  DCV 200m-1000
  ACV 200-750
  DCA 200μ-200m + 10
  hFE NPN PNP
  No temperature sensor in C
  Square wave generator 50Hz - only some has it
  Diode
  Ohm 200-2000k
  3 probe sockets - 10ADC, V/Ohm/mA, COM
  Buzzer speaker

DT-830E
  ...
  BAT 1.5V 9V
  ...

DT-832
  DCV 200m-1000
  ACV 200-750
  DCA 2000μ-200m + 10
  hFE NPN PNP
  No temperature sensor in C
  Square wave generator 50 Hz
  Diode
  Ohm 200-2000k
  3 probe sockets - 10ADC, V/Ohm/mA, COM
  Buzzer speaker

DT-832H
  Like DT-832 but with 1000 Hz square wave generator

DT-837
  Temperature sensor in C

DT-838
  DCV 200m-1000
  ACV 200-750
  DCA 2000μ-200m + 10
  hFE NPN PNP
  Temperature sensor in C
  No square wave generator
  Diode
  Ohm 200-2000k
  3 probe sockets - 10ADC, V/Ohm/mA, COM
  Buzzer speaker

DT-838C - Aneng knock-off?
   DCV 200m-1000
  ACV 200-750
  DCA 2000μ-200m + 10
  hFE NPN PNP
  Temperature sensor in C
  (No square wave generator)
  Diode
  Ohm 200-2000k
  3 probe sockets - 10ADC, V/Ohm/mA, COM
  Buzzer

About square wave: https://www.youtube.com/watch?v=4yfq9YrUUpI

830D Manual in Swedish with inaccurate comparison table:
https://gertech.se/gertech/files/Bruksanvisning_DT830.pdf