Control your solar tubewell remotely by SMS, locally by button, or through AP Mode Hotspot webpage — with VFD-confirmed feedback, protection alerts, runtime records, and no monthly cloud subscription.
Many farmers still operate solar tubewells manually. They have to visit the tubewell site to start the motor, stop the motor, check whether the VFD is running, or understand why the system has stopped.Â
This creates practical problems:
For farmers, installers, and agricultural water users, a solar tubewell controller must be practical, affordable, and reliable in real field conditions.
AabNex SMS is designed to solve these problems through a simple and practical control system.
It allows the user to operate the solar tubewell remotely through SMS, locally through a physical button, and locally through a built-in AP Mode Hotspot webpage. It communicates with supported VFDs through RS485/Modbus, so it can confirm actual VFD ON/OFF status and read important VFD data.
AabNex SMS is not just a basic ON/OFF controller. It is a solar tubewell VFD control, monitoring, protection, and maintenance alert system developed for agricultural use.
AabNex SMS sits between the user and the solar tubewell VFD.
The user sends an SMS command such as ON, OFF, STATUS, FAULT INFO, or other supported commands from an authorized mobile number.
The controller communicates with the VFD through RS485/Modbus and sends the required control command.
AabNex reads actual VFD status and confirms whether the motor is running, stopped, or in fault condition.
The user receives a short SMS reply with confirmation, status, fault information, runtime, or parameter details depending on the command.
When the user or technician is near the panel, the tubewell can also be controlled using the local button or AP Mode Hotspot webpage.
Best for:
Use the local button when present at the tubewell site.
Best for:
Connect your mobile phone to the device hotspot and open the local webpage.
Best for:
Important clarification:
AP Mode is local hotspot control. It is not cloud/app control. For internet-based app monitoring and full Khata, customers should use AabNex IoT.
AabNex SMS is not limited to manual ON/OFF commands. It also supports timer and schedule-based operation, giving farmers more control over irrigation time and tubewell usage.
With timer control, the user can start the tubewell for a fixed duration. This is useful when the farmer wants the motor to run for a specific time and stop automatically. Timer control helps with:
Example use case:Â A farmer wants to run the Tubewell for a fixed period and does not want to manually send the OFF command later. AabNex SMS can run the system according to the selected timer and stop it after the set time.
AabNex SMS also supports scheduled operation. The tubewell can be configured to run during selected time periods, depending on the farmer’s irrigation plan and system configuration. Schedule control is useful for:
AabNex SMS communicates with supported VFDs through RS485/Modbus. This allows the device to read important VFD parameters and provide better control, feedback, diagnosis, and protection.
Depending on VFD compatibility, AabNex SMS can monitor:
This makes AabNex SMS much stronger than a simple relay-based SMS controller.
AabNex SMS does not only send an ON/OFF SMS command. It checks actual VFD status and confirms whether the Tubewell is really ON or OFF and Send the “Reply SMS” to the User.
Solar tubewell systems operate in tough field conditions. Voltage changes, dry-run conditions, pump load issues, repeated VFD faults, and overheating can create expensive problems. AabNex SMS uses VFD data, runtime information, and fault events to support protection and early warning features
AabNex SMS comes with built-in Protection features, with these features farmers can save hours of troubleshooting and component replacement. These features include:
Predictive maintenance means the controller does not only wait for failure. It watches important operating conditions and warns the user when repeated or abnormal behavior appears.Â
Possible predictive maintenance alerts include:
AabNex SMS includes several advanced field features designed for real solar tubewell operation:
Many farmers sell water on an hourly basis. AabNex SMS provides runtime and session information that helps the user manually calculate water usage. AabNex SMS can provide:
Important Note:Â AabNex SMS provides runtime/session information for manual calculation. Full customer-wise Khata, hourly billing, payment tracking, balance records, and cloud reports are available in AabNex IoT.
AabNex SMS is designed for users who want practical remote control without depending on internet or cloud services.
With AabNex SMS:
This makes AabNex SMS suitable not only for weak-internet areas, but also for cost-sensitive farmers who want a one-time device solution.
For farmers who want to start, stop, check, and protect their solar tubewell without visiting the site every time.
For farmers who sell water on an hourly basis and need runtime/session information for manual calculation.
For installers and Dealers who want to offer a professional smart controller with RS485/Modbus VFD communication.
AabNex SMS is designed for solar tubewell systems using VFDs with RS485/Modbus support.
Before installation, confirm:
AabNex SMS must be installed by a solar/VFD technician or Person with Good Knowledge and Experience. Wrong wiring, wrong power supply, incorrect VFD settings, poor grounding, or unsafe installation can damage the controller, VFD, motor, pump, or solar system.
Note: If you are Not sure whether your VFD is compatible? Contact Arduino Expert before ordering.
AabNex SMS is designed and developed by ArduinoExpert as a commercial field device for solar tubewell VFD control. The product is built for practical agricultural use, with focus on:
Each device should pass factory testing before dispatch, including power test, GSM test, SMS send/receive test, RS485 communication test, VFD feedback test, button control test, AP Mode webpage test, and final inspection.
AabNex SMS gives farmers a practical way to control, monitor, and protect solar tubewell VFD systems using SMS, local button control, and AP Mode Hotspot webpage control. It is built for real agricultural field conditions, low running cost, and practical installation by solar/VFD technicians. Click on below button for Buying and Checking the AabNex SMS device Specifications.
AabNex SMS is a solar tubewell VFD controller that allows remote control through SMS and local control through button or AP Mode Hotspot webpage. It communicates with supported VFDs through RS485/Modbus for feedback, parameter monitoring, fault information, and protection features.
No. It is also for farmers who want an affordable one-time device solution without mobile app dependency or monthly cloud subscription.
No. SMS control does not require internet. AP Mode webpage control also works locally without internet.
No. AP Mode is a local hotspot webpage near the device. It is not cloud monitoring. For app/cloud monitoring, use AabNex IoT.
Yes, depending on VFD compatibility. It can read key VFD parameters such as current, voltage, frequency, DC bus voltage, status, fault code, power/load, and other supported data through RS485/Modbus.
Yes. It reads VFD feedback and can confirm whether the VFD is actually running or stopped.
Yes. It Supports the Over Current Protection.
Yes. It supports dry-run / no-water protection using VFD data and configured threshold settings.
Predictive maintenance means the device uses fault events, runtime data, current/load behavior, voltage behavior, and service intervals to warn the user before small issues become major failures.
AabNex SMS provides runtime/session information that helps manual water-selling calculation. Full customer-wise Khata, billing, payment tracking, balance records, and cloud reports are available in AabNex IoT.
No. It requires a VFD with RS485/Modbus support and compatible register mapping. Compatibility should be confirmed before installation.
A solar/VFD technician or person with proper knowledge and experience should install and configure the device. The running cost for AabNex SMS device is very low, only SMS Package/Balance is needed. in PKR it is less that 100/Month. This cost can become Zero, if user do not need Feedback SMS.
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