• Models have small cost with the high quality.
• Measurement of variable and constant stress to 1000 v.
• Measurement of alternating and direct current to 10 a.
• Measurement of resistance.
• Measurement of temperature, frequency (3805-50).
• Interface for the connection for the sake of PK, rS 232 (add. option).
• Function Of trMS (3805-50).
• Functions of automatic turning off of nourishment, checking of diodes.
• Frequency characteristics of the measured signals:
  stress is THE ACE: 40-500 Hz (3803, 3804-50), 40 Hz -2 kHz (3805-50),
  current is THE ACE: 40-500 Hz (3803), 50 Hz - 2 kHz (3804-50, 3805-50).

Functions of the measurement	Maximum range	Error with the frequency of 50-60 Hz ([i].[v]. - the measured value, [e].[m].[r]. - units of the lowest-order digit)
stress DC	1000 [v]	± 0.6% of [i].[v]. ± of 2 [e].[m].[r]. (3803) ± 0.3% of [i].[v]. ± of 2 [e].[m].[r]. (3804-50) ± 0.1% of [i].[v]. ± of 2 [e].[m].[r]. (3805-50)
stress A[S]	1000 [v]	± 2.0% of [i].[v]. ± of 2 [e].[m].[r]. (3803) ±1.2% of [i].[v]. of ±5 of [e].[m].[r]. (3804-50) ±1.1% of [i].[v]. of ±5 of [e].[m].[r]. (3805-50)
current DC	10 A	± 1.5% of [i].[v]. ± of 2 [e].[m].[r]. (3803) ±0.2% of [i].[v]. of ±3 of [e].[m].[r]. (3804-50) ± 0.1% of [i].[v]. ± of 3 [e].[m].[r]. (3805-50)
current A[S]	10 A	± 2.0% of [i].[v]. ± of 2 [e].[m].[r]. (3803) ±1.2% of [i].[v]. of ±5 of [e].[m].[r]. (3804-50) ± 0.1% of [i].[v]. ± of 5 [e].[m].[r]. (3805-50)
Resistance	40 M	±0.6% и.в. ±5 е.м.р..
Frequency (3805-50)	50 kHz	±0.05% и.в. ±4 е.м.р..
capacity (3804-50, 3805-50)	10 mf	±2.0% и.в. ±4 е.м.р..
temperature (3805-50)	- 40 to 1372 wasps
Signaling test	35 Ohm (3803) and 10 Ohm or is less (in the range 400 Ohm)	±2.0% и.в. ±6 е.м.р..