[WITHOUT ] - Both the precipitation measurement and the thermometer works without power and batteries. You have the devices permanently in use, without having to lay cables or change batteries [PRECIPITATING KNIFE] - The rain gauge is the rainfall in millimeters. The scale is in a range of 0 -35mm. The rain gauge is supplied with a spike and can simply be plugged into the ground. [THERMOMETER] - wooden thermometer. For indoor or outdoor use. Temperature display -30 to + 50 Celsius. [3 in1 WEATHER STATION] - Three-in-one weather station. can be used as a wind gauge, rain gauge and thermometer. [PRACTICAL HELP] - This mini weather station is the to check temperature conditions and stay up to date. With this simple and very comfortable solution hobby have found a perfect garden assistant., Manufacturer: Jnchdghwa