SY821-1 Conversion switch (for thermocouple detection)Detailed product description：

The SY821 type conversion switch is a specialized switch for verifying thermocouples. There are seven pairs of terminal posts and two conversion switches on the panel. With the help of a standard thermocouple and a DC potentiometer, five thermocouples can be verified at once. This switch can also be used as a power reversing switch.

SY821-1 and SY821-2 can respectively connect 11 and 14 thermocouples under test.
Switch contact potential ≤ 0.1 μ V
Allow maximum current of 0.5A
Resistance between input and output terminals (including lead resistance and switch contact resistance) ≤ 500m Ω
Dimensions: 260 × 190 × 130 (mm) Weight: Approximately 2kg