Suntech - ST25T

The Suntech ST25T/PM is a multifunctional port expander designed to be used in conjunction with the ST3300 or ST4300 tracking devices. This device provides accurate information about fuel level and other additional functions. One of the standout features of the ST25T/PM is its power-saving mode, which allows for lower battery consumption and therefore, greater autonomy. This is especially useful in long-term tracking applications where a reliable and durable device is required.

The ST25T/PM is powered through a 5V power source from the ST3300 or ST4300, which simplifies installation and eliminates the need for additional batteries. Additionally, it has efficient power consumption, with 37.5mA in recurrent active mode and only 3.1mA in suspension mode. With a temperature range of -45°C to +85°C, the ST25T/PM is capable of operating in extreme conditions, making it an ideal choice for applications in adverse environments. Its compact size of 53 x 55 x 19 mm and lightweight design of 32g (without event cables) make it easy to install on different types of vehicles and equipment.

The ST25T/PM also offers the ability to remotely update its firmware using the Over-The-Air (OTA) function through the ST600M or ST4300, ensuring that the device is always up to date with the latest improvements and features.

Highlighted Features:

  • Multifunctional port expander
  • Provides information about fuel level and more
  • Power-saving mode for greater autonomy
  • 5V power source from the ST3300/ST4300
  • Low power consumption: 37.5mA in recurrent active mode, 3.1mA in suspension mode
  • Temperature range of -45°C to +85°C
  • Compact size of 53 x 55 x 19 mm
  • Lightweight design of 32g (without event cables)
  • Remote firmware update using OTA
This information only is for informational purposes only, Plaspy does not have relationship with the device's manufacturer, for more information check the manufacturer's website or user manual.

Set Up ST25T


To set the tracker send the following commands by SMS messages, the ID is the last 6 numbers of IMEI excluding the last number.
for example, if the IMEI is e0ofIMXKSrUcJct the device Id is gTuUR1

Type the IMEI number Your Plaspy device ID is w4gVQOR0LNSn5uB4f5ZzBBix
  1. Set the operator APN and GPRS server
    SA200NTW;{{('XXXXXX' + imei.substring(8,14)).slice(-6)}};02;10;{{apn}};{{apnu}};{{apnp}};;8888;;;;
  2. Set the update interval to 60 seconds
    SA200RPT;{{('XXXXXX' + imei.substring(8,14)).slice(-6)}};02;60;60;60;3;0;0;0;0;0

To check settings SA200CMD;{{('XXXXXX' + imei.substring(8,14)).slice(-6)}};02;PresetA