This voltage signal amplifier module is designed for microvolt /millivolt signal amplification with 1.5-1000 gain range. It is equipped with AD620 instrumentation amplifier chip and support null point adjustment, negative voltage output and noise filtering capabilities ensure you can get the low distortion but high frequency signal ideal for small signal amplification. Specifications: Chip:AD620 Input Voltage: DC 3-12V Amplification Range: 1.5-1000 Signal Input Voltage: 100uV-300mV Signal Output Range:±(Vin-2V) Offset Voltage: 50μV Input Bias Current: 1.0nA(max.) Common Mode Rejection Ratio: 100dB Offset Voltage Drift: 0.6μV/℃(max.) Module Size: 32 X 22mm/1.26 X 0.87inch(L*W) Package Included: 1X AD620 Microvolt Millivolt DC Voltage Amplifier Module