AUTO MODEtests moisture levels every 2 hours & alerts you when to water. MANUAL MODEgives you moisture levels at the press of a button. NO WORRYplant care. When unit flashes RED repeatedly, it's time to water. What could be easier? NO EXPENSIVE REPLACEMENT CARTRIDGESNo complicated meters to read. Prevents withering & root rot. ELEGANT, DISCREET"mushroom" design compliments any plant. (2 x LR44 long-life batteries included). Love Your Plants Are you tired of constantly checking the moisture level of your plants' soil? Look no further than our automatic soil moisture meter This handy device accurately measures the moisture content of your soil, eliminating the guesswork and ensuring your plants are always properly hydrated. With its convenient automatic function, you can set it and forget it. This device is perfect for indoor or outdoor gardening, and can help prevent over watering and root rot. Invest in the health and well-being of your plants with our automatic soil moisture meter. Our "leave in" moisture meter for plants automatically tests moisture levels every 2 hours and alerts you when your plant require water. This ensures your plants always have the perfect moisture content in the soil. Step 1: Turn unit ON. Step 2: Insert probe to appropriate depth (see instructions). Step 3: When unit flashes RED continuously every 6 seconds, it's time to water plant What could be easier? Indicators (Auto/Manual): Green (1 flash) indicates that your plant has the correct soil moisture content. Yellow (3 flashes) indicates that moisture levels are slightly low. Red flashes repeatedly every 6 seconds indicating it is time to water plant. (2 Replaceable LR44 (AG13) batteries included). For indoor or outdoor use (non submersible).