Fangrui Product Details High Accuracy Temperature Measurement: The Wn34s Soil Temperature Sensor Provides Accurate Temperature Readings, Ensuring That You Can Monitor The Temperature Of Your Soil With Ease. Easy To Use: With Its Simple And Intuitive Design, The Wn34s Soil Temperature Sensor Is Easy To Use. And Long-lasting: Made From High-quality Materials, The Wn34s Soil Temperature Sensor Is Built To Last. Soil Temperature Tester With 30cm(11.81inch) Stainless Steel Probe Sensor For Potted Plants, Greenhouse, Lawn, Farm, Garden.help You Know The Soil Temperature More Clearly And Accurately, So That Your Plants Can Grow Better. View Temperature Reading On The Live Data Page Of The App(requires That The Gateway And Your Phone Are Using The Same Wi-fi Network). Or View Temperature Data In Real-time On The Display.up To 8 Channels Supported. Channel Names Can Be On The App Or On The Console.battery Level Information Displayed On The App Or On The Console. Specifications: Frequency: A-: 915mhz Power: 1x1.5v Aa Battery (not Incl