Features: Used for I2C port None drift / bidirectional current / power monitoring Sensors module. Up to 128 sample can averaged to achieve filtering in noise environment. I2C interfaces have a timeouts setting, not only to prevent bus lock, but also provide highly speed modes, to meet the communication requirements of up to 3.4MHz. The high precisions products combine the advantages of 12 bit resolution. This module can be sensed bus voltages ranges is 0V to +26V. All properties is software programmable to support. A single power supply, the operating voltages of between +3.0 to + 5.5V. Specifications: Materials: Plastic Single Size: about 2.6x2.3cm/1.02x0.91inch Package Includes: 3Pcs/set Power Monitoring Sensors Module note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.