Elitech WiFi 5G/2.4G Digital Temperature Data Logger Remote Real-Time Temperature Monitor Cloud Data Storage SMS/Email/APP/Web Alarm, with Dual External Temp Probe, 16.4ft, RCW-800W-TDE-V2(-40~176℉)

High precision probe - Accurately sense small changes in temperature. With a measurement range temperature -40℉ ~176℉(-40℃~80℃) Parameter Settable - Temperature unit switch, Record,Upload interval&Alarm interval Audio and Visual Alerts - Audible and Visual Alarm help you find the abnormal cases in time Built-in rechargeable lithium battery - it can still provide real-time data upload for a long time after power failure (no lees than 7 days at 25℃, upload interval 5 minutes) Easy to install - Built-in magnet, can be directly adsorbed refrigerator fixed or drill holes to be fixed