Free downloads for design engineers and purchasers: the communication protocol, the Windows Serial Port Debugger and the RadarBLE mobile APP for Android and iOS. No registration and no email wall — every file listed below is served directly from jiajiaeye.com. User manuals for individual models are published on each product page.
One protocol document covers every RS-485 and TTL-UART model in the range. The Windows Serial Port Debugger (JiajiaEye UartTool) runs on Windows and is used to set parameters, calibrate the measuring range, read the echo curve and upgrade firmware over RS-485 or TTL UART.
| Item | Applies to | Download |
|---|---|---|
| Communication protocol Modbus-RTU register map and command set for RS-485 / TTL UART and 4–20 mA models. |
All RS-485 and UART models | |
| Windows Serial Port Debugger — software Installer for Windows 7 / 10 / 11. Parameter setting, range calibration, echo curve readout and firmware upgrade over RS-485 or TTL UART. |
Windows PC | Download |
| Windows Serial Port Debugger — user manual First connection, parameter table, echo curve reading and firmware upgrade. |
Windows PC | |
| Windows Serial Port Debugger — operation video Step-by-step walkthrough: connect the USB-to-serial adapter, read live data and change parameters. |
Windows PC | YouTube |
A custom text protocol or a bespoke Modbus register map can be written for OEM projects — use the document request at the bottom of this page.
RadarBLE — Bluetooth field configuration APP. Switch the output mode, set the range and read the echo curve from a phone, without opening the housing. Interface is bilingual (English & Chinese).
| Item | Platform | Download |
|---|---|---|
| Android APP — APK Install the APK directly from jiajiaeye.com. No Google account required; allows unknown sources during install. |
Android | Download |
| Android APP — Google Play Scan the QR code with an Android phone to open the Google Play listing. |
Android | Download |
| iOS APP — App Store Please search for the app RadarBLE on the Apple App Store. |
iOS | RadarBLE |
| APP user manual Bluetooth APP user manual (English & Chinese). |
Android & iOS | |
| APP operation video Step-by-step Bluetooth field configuration on iPhone — switch output mode, set range and read the echo curve without opening the housing. |
Android & iOS | YouTube |
APP packages are being finalised. Until they are published here, email [email protected] with your model and phone type and we will send the install file and setup steps within two working days.
App Store：United States, Canada, Germany, France, United Kingdom, Italy, Spain, Greece, Japan, South Korea, Australia, New Zealand, Singapore, Malaysia, Thailand, Philippines, Indonesia, Vietnam, Mexico, Brazil, Saudi Arabia, United Arab Emirates, Turkey, Mainland China,
Cannot find what you need? Tell us the model and the document:
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