These modules use the Allegro ACS series current sensors for precise AC and DC current sensing. The Sensor provides 2.1 kVRMS Voltage isolation with a low resistance current path. These sensors have a total output error of 1.5% at 25°C.
These sensors Require a 5V supply and have an unpopulated RC filter on the OUT pin to improve signal-to-noise ratio in low-frequency sensing applications. We also added a screw type connector rated at 30A for easy lug free installation and a power indicator LED. 4 x M3 mounting holes will make mounting this module easy.
The output voltage is proportional to the current flowing through -IP Aand +IP.
|5A Bidirectional||185mV/A||Vcc/2 @ 0A|
|20A Bidirectional||100mV/A||Vcc/2 @ 0A|
|30A Bidirectional||66mV/A||Vcc/2 @ 0A|
|20A Unidirectional||185mV/A||500mV @ 0A|
|30A Unidirectional||133mV/A||500mV @ 0A|