
SEN0291 · DFRobot

The I2C Digital Wattmeter measures voltage, current, and power for electronics within 26V 8A, with ±0.2% accuracy after manual calibration. Ideal for solar and battery applications. (DFRobot SEN0291)
| Part number | SEN0291 |
|---|---|
| Manufacturer | DFRobot |
| Category | Sensors › Current & Voltage |
| Pins | 4 |
| Voltage (max) | 26 V |
| Current | 8 A |
| Tolerance | 0.2 % |
Gravity: I2C Digital Wattmeter pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | VCC | power | |
| 2 | GND | ground | |
| 3 | C (SCL/TX) | bidirectional | I2C SCL, or UART - see the module's pinout |
| 4 | D (SDA/RX) | bidirectional | I2C SDA, or UART - see the module's pinout |
Schematic symbol and footprint
Schematic symbol
Footprint: JST PH 2.0 mm 4-pin through-hole (Gravity PH2.0-4P) — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.



