For Downloads

Data Sheet – User Manual – Other Documents – Certificates


Setup Software

Testing Software

For Purchase

Call / WhatsApp / Telegram: +91 8148834200

For Technical Support

Call / WhatsApp / Telegram: +91 8148834211

COS03 data logger is a device suitable for monitoring and recording temperature and humidity data during transportation. No need for an external power supply and the signal line, use it directly after booting. This USB temperature and humidity data logger can be calibrated by pressing the keys to adjust the upper and lower limits and alarm values. A maximum of 260,000 data can be stored at a time (2.08 million optional), and the stored data can be directly exported through the USB interface.

COS03 Temperature and Humidity Data Logger

Our COS03 USB data logger is a cost-effective solution that can record temperature and humidity data almost anywhere. Using the built-in alarm LED, built-in rechargeable battery, fully charged can work continuously for up to half a year. It’s that simple to set the log recording interval and start time through the recorder buttons or PC software. There are no cables, cradles, or dongles to keep track of. In addition, we have a mini temperature data logger with 80000 readings storage capacity for your optional. Its price is lower and the accuracy is slightly lower than COS03.

COS03 Specification

Power supply: Built-in battery-powered or DC5V
Record capacity: 260 000 readings
Temperature range:
Built-in probe type: -20 ~ + 60 ℃
Probe external type: -40 ~ + 80 ℃
Humidity range: 0~ 100% RH
Accuracy: ±0.3℃(25℃), ±2%RH(5~95%RH,25℃)
Operating conditions: -20° to 60°C, 0-95% RH
Record interval: 5 seconds to 18 hours may be provided
Measure the update time: 2 to 255 seconds may be provided
Battery Life: Once the fully charged device can work for 1 year. The maximum battery charge and discharge cycles 1200 times

Temperature and humidity data logger use

The COS03 USB temperature humidity data logger is mainly used to monitor and record the temperature and humidity data of food, medicine, chemical supplies, and other products during the storage and transportation process. It is widely used in various links of the storage and logistics cold chain, such as refrigerated containers, refrigerated trucks, refrigerated packages, Cold storage, laboratory, etc.

Temperature data logger FAQ

 How long are the service life of this USB temperature and humidity sensor?

The normal working life is up to five years.


How long is the data recording interval of this USB temperature sensor?

Our data recording interval can be set according to requirements, and the setting range is 5s~18h.


What is the storage capacity?

COS03 temperature datalogger normal type can store 260,000 readings, and the upgraded type can store 2,080,000 readings. Our small COS04 temperature datalogger normal type can store 80,000 readings, and the upgraded type can store 260,000 readings.


How long can the battery last during use?

When fully charged, if this temperature data logger has been in a continuous alarm state, it can be used continuously for three months. If the temperature and humidity data logger works normally and the alarm state is not frequent, it can be used continuously for six months.


What are the advantages of the COS03 recorder?

1. This USB temperature sensor comes with a large LCD screen, which can display real-time temperature and humidity values, extreme temperature and humidity values, and the temperature units of Celsius and Fahrenheit can be freely selected.
2. Built-in buzzer, with an over-limit alarm function, can automatically change the recording frequency when alarming, to ensure that the recorded data truly reflects environmental changes.
3. The functions of timing start recording and timing stop recording can be set. When multiple temperature recorders are used, ensure that the equipment starts recording at the same time and stops at the same time.


Write a review

Note: HTML is not translated!
    Bad           Good

Temperature Humidity Data Logger

  • Brand: embsys
  • Product Code: COS03
  • Availability: In Stock
  • Rs.4,325.00

Available Options

Tags: temperature, humidity, data, logger