Is this OK to use in 220VAC Power to measures the current A? Based on the datasheet: https://www.e-gizmo.net/oc/kits%20documents/ACS71x%20Current%20sensor%20breakoutboard/ACS711-Datasheet.pdf
It is optimized for low-side current sensing application and it depends on the current capacity of the ACS IC.
The ACS711 -
Is there an Arduino/gizDuino sketch for TDU to get the value and calibration command? Yes it is downloadable in our website.
Here's the link: https://www.e-gizmo.net/oc/kits%20documents/Temperature%20Control%20Unit%20Display/TDU_Serialcode.zip
For Calibration command: https://www.e-gizmo.net/oc/kits%20documents/Temperature%20Control%20Unit%20Display/Temp_Display_Unit_Sample.zip
Is this compatible in Arduino/gizDuino? Yes, but you need to consider first what are the required power supply and other components for SIM800L module. (See the Datasheet)
SIM800L module's input power
Is this compatible in Raspberry Pi? Yes, the SIM800L Module is compatible in Raspberry Pi. It has 3.3V power supply also the serial logic to communicate.