No gateway is required to connect to WiFi directly, and view temperature and humidity changes through the mobile phone APP, which is convenient to manage plants more healthily. 24-hour real-time recording, mobile phone APP to view historical records. Applicable to a variety of fields, can meet the soil testing work of various gardening and planting sites, greenhouse planting, orchard seedlings, gardening planting, etc. Widely applicable to natural or soil, mixed plant soil, etc., not suitable for hard soil rock, organic coconut fiber, natural soil. Power supply: 3 x1.5V AA batteries (batteries not included) Waterproof rating: IP65 Water measurement range: 0-100percent Water measurement accuracy: 0-50percent (and3percent ), 50-100percent (and5percent ) Temperature measurement range: -5C-60C Temperature measurement accuracy: 1C Color: As shown Material: plastic Package Contents: 1 x Temperature and humidity soil meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.