can this run on batteries only, no power where I want to put it

Hello, The outdoor 5-in-1 sensor is powered by standard alkaline batteries or lithium batteries during the time in which temperatures are below -4 degrees Fahrenheit/-20 degrees Celsius. The indoor display unit can be powered by batteries instead of the power adapter, however, when using battery power alone, the backlight is only available momentarily for 10 seconds by pressing the “light bulb” button. If you have further questions, please reach out to our support team via live chat or email request on the AcuRite website. Have an enjoyable day! Haylee AcuRite Support Team

Outside unit runs on lithium batteries