Suntech ST20 is specifically designed for the ELD (Electronic Logging Device) ecosystem. It retrieves the vehicle information that is required by our ELD Compliance application partners through a direct connection to the vehicle with the appropriate harness (J1939/J1708). This required vehicle data is transmitted to the android device through the RS232 interface, which provides the data and charging connection.

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FMCSA ELD regulation commitment
and enrollment
J1708 IS015765-4

- Support Heavy Duty Vehicle Protocol – J1939 (250/500 kbps)/J1708
- Vehicle parameters passed through RS232 for ELD requirement:
  - Vehicle ID Number (VIN), Vehicle Speed, Odometer, Engine Hour, Engine RPM
- ASCII text data format sent over RS232 that can be connected to an Android based tablets or smartphones.
- Support LED - Indicator of Operating Status (Active/Sleep)
- Support Sleep Mode to Protect Vehicle Battery
- Support wired connection for data and charging to android tablet (Single Cable)
- FMCSA ELD regulation commitment and enrollment
- Support Vehicle protocol : J1939, J1708 IS015765-4

Specification ST20
AT Command Supported
Housing Dimension 53.5(W) × 56(L) × 19(T) mm
Weight 32g (without event cable) 
Power Consumption Typical (3min. reporting) : 10mA @24V
Sleep mode : Approx. 1.0mA@24V
Operational Temperature Range -30˚C ~ +80˚C
Certificates FCC, RoHS
Power Supply DC 8 V ~ 33 V, Main power +/- inversion protection
Electric Protection Protection against ESD and overvoltage 
5 pin connector Output Power
1x Enable (Control on/off of 5 pin cable to save power.)
RS232, Rx
RS232, Tx
6 pin connector J1708 +/- 
CAN Hi/Lo  
Power Supply (e.g. +12V/+24V)  
Interface J1939, J1708, RS232
Connectivity Output Vehicle data via RS232
We can provide highly customizable devices. Based on the functions available on the device, more functions can also be optionally available to meet specific needs of the users requiring customization. In addition to the basic functions of the standard version, some of functions can be included as optional items.

These external devices can be used for various applications with main devices.

For any further information, please contact our sales representative.