Main Features RCW-400A is a data logger with four channels of temperature or humidity detectors(more details in specification).It has the advantages of wide temperature measuring precision. RCW-400A communicates with Cold-Chain Cloud on Internet.The LCD screen displays current working state,the recording capacity and the recording data. It can alarm by buzzer or by the SMS. Users can view and download data of temperature and humidity through cloud anywhere and anytime.Users can also view data by smart phones(Support iOS and Android only)     Specification Product Size: 133*128*34(mm)   Technical Parameters Power supply: 12V AC/DC~24V AC/DC.
It could connect with power supply of 100~264VAC,
50/60HZ by extemal power adaptor; Temperature measuring range: -40℃~70℃; Temperature accuracy;
±0.5℃(0℃~40℃);
±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: 1 min to 24 hours continuously set; Record capacity: each channel 20000 points(MAX); Applicable environment: temperature -20℃~50℃;humidity 0%~95%; Extemal alarm relay:10A/220VAC; Communication interface:WCDMA(3G).       Picture