RCW-400A Wireless Temperature Data Logger

RCW-400A is a four-channel temperature and humidity data logger with high precision and wide temperature range. The segment LCD screen displays the system clock, current running status, memory capacity and recorded data. It has an internal buzzer that are connected to an external audible and visual alarm. It can transmit data wirelessly by 3G to our cold chain cloud platform, and users are able to check real-time temperature/humidity data through web and receive SMS (short message service) alarms by GSM. Users can view, manage and monitor data online remotely by browser or mobile app.

The standard accessories include one temperature sensor and one humidity sensor, which can be doubled into two temperature sensors and two humidity sensors. The data logger has a built-in rechargeable lithium battery which enables continuous real-time data uploading and SMS alarms even in case of power outage.

Key Features:

  • Comes with 1 external temperature sensor and 1 external humidity sensor, supports up to 4 temperature or humidity sensors to meet different monitoring needs.

  • Real-time data uploaded to Cloud platform, upload interval settable, save manual logging.

  • Alarm temp limits settable, alarm modes in case of out-of-limits and power outage: SMS, app, buzzer.

  • To prevent an accident, records 20,000 offline temperature points and 20,000 offline humidity points, which will upload after WiFi restores.

  • Standard plan (free) provides email alert, remote setting, and 30 days data review and storage; Advanced and professional plan available, which provide 3~5 years data storage, data export, user management, and FDA service. 


  • Specifications
  • Literature
  • User Guide
  • Video
  • Software
  • Support

Technical parameters:

  • - Power supply: 12VAC I DC-24V AC I DC.

  • It could connect with power supply of 100-264VAC, 50/60HZ by external power adaptor;

  • - Temperature measuring range: -40℃-80℃/-40℉-176℉

  • - Temperature accuracy: ± 0.5 (0℃-4℃); ± 1 (-25℃-0℃ ); ± 2 (others) (If sensor wire is longer than 50 M, accuracy deviates 1%);

  • - Humidity measuring range:10-90%RH;

  • - Display resolution: 0.1;

  • - Humidity accuracy:(10℃, 25℃, 40℃) ±5%(30-80%) ;

  • - Temperature sensor type: NTC;

  • - Humidity sensor type: SHT21;

  • - Record cycle: 1min to 24 hours continuously set;

  • - Record capacity: each channel 20000 points (MAX);

  • - Applicable environment: temperature -20℃-50℃; humidity 0%-95%;

  • - External alarm relay: 10A 220VAC ;

  • - communication interface: WCDMA(3G).

  • - Product size: 133*128*34 (mm)


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