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- CJMCU-219 INA219 I2C Bi-directional Current / Power Monitoring CJMCU-219 INA219 I2C Bi-directional Current / Power Monitoring






CJMCU-219 INA219 I2C Bi-directional Current / Power Monitoring
- Description
- Return & Refund Policy
- Reviews
Sensor Module
The CJMCU-219 INA219 is a precision high-side current and power monitoring sensor module featuring bi-directional current sensing and I2C communication. Based on the INA219 IC, it enables accurate real-time measurement of voltage, current, and power in both directions, making it ideal for applications like battery management, solar power systems, and embedded electronics diagnostics.
This compact module includes a 0.1Ω onboard shunt resistor and supports a wide input voltage range up to 26V, current up to ±3.2A, and high-speed I2C communication up to 3.4MHz. It provides high accuracy (±0.5%) and is compatible with platforms like Arduino, Raspberry Pi, and other microcontrollers.
Key Features:
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Based on INA219: High-precision current, voltage, and power monitor
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I2C Interface: Simple communication with configurable address (default: 0x40)
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Bi-directional Sensing: Measures both supply and return current
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Integrated 0.1Ω Shunt Resistor: For reliable readings up to ±3.2A
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Operating Voltage: 3.0V to 5.5V
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Voltage Range: 0V to 26V
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Resolution: ±0.8mA current resolution
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Accuracy: ±0.5%
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Mounting: 4-pin header (VCC, GND, SDA, SCL)
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Software Programmable: Fully configurable calibration registers
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Compact Size: 26mm x 22mm x 6mm
Applications:
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Battery level monitoring
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Solar panel energy tracking
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Power supply diagnostics
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Smart energy meters
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Embedded system monitoring
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Robotics and automation systems
Package Includes:
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1 × CJMCU-219 INA219 I2C Current / Power Monitoring Sensor Module
RETURN POLICY
Hallmark PCB Services (Indiacomps – www.indiacomps.com) reserves the right to accept products for return at its discretion. Eligibility of a product for return will be expressly mentioned on the Website page for that particular product. Only sealed and undamaged items may be returned. Any expenses incurred for the process of returning a product back to Hallmark PCB Services will be borne by the buyer and Hallmark PCB Services reserves the right to recover such cost from the buyer by any means at its disposal if the buyer does not bear the aforementioned expense.
ORDER CANCELLATION POLICY
Before Order has been Shipped
In case, customer want to cancel the order, before the order has been shipped, customer needs to pay flat 5% order cancellation charge. Indiacomps will refund the amount after charging the order cancellation fees to the customer. Generally, the refund is initiated with 2 Business days. The time taken for the amount to get credited to customer’s original payment method, depends on payment gateway, and varies from 1-7 days.
After order has been shipped
In a case where the order has been shipped and customer would like to cancel the order, then as the order would have left our premises, we cannot cancel the order. But the customer should not accept the order, and ask the courier to return to sender, without opening the parcel. The refund will be initiated within 2 business days after the parcel has been received back at our office. In such scenarios, the customer would have to pay 5% order cancellation charge, and the forward shipping charge, and return shipping charge. We will initiate the refund to customer, the balance after charging the customer for order cancellation fees, forward shipping charge, and return shipping charge. If the customer has opened the parcel, then the returned items will be verified, and the refund will be initiated after verification within 3 business days.
REFUND AND EXCHANGE POLICY
We want you to be completely satisfied with your purchase. If, for any reason, you are not happy with your products, please read our refund and exchange policy to understand the options available to you.
DAMAGED OR DEFECTIVE ITEMS
- Notification: If you receive a damaged or defective item, please contact us immediately by email and return the product within 7 days.
- Resolution: Once you report the issue, our team will work with you to resolve it promptly. Depending on the nature of the issue, we may provide a replacement. Verification of the damage or defect will be required. This process will be done within 7 days.
- Replacement: Once we receive damaged product we will process and deliver the replacement or exchange product within 6 to 7 days.
CONTACT INFORMATION
For assistance, please reach out to us at: sales@indiacomps.com