The double-insulated heat mat uses far-infrared light waves to provide seedling with a safe and precise amount of heat.. Set the watering time is important, it should be according to your plant pots size and the plants consumption of water everyday. Please prepare some pots saucers to hold the pots. We believe after several times of test, you will know how many seconds watering and interval time is your best choice. Designed to increase the temperature of the rooting area 10℉ to 20℉above the ambient air temperature, perfect for indoor gardening, for better plant growth and flower seed germination, Increases the success of seedlings and cuttings. Waterproof design (Level: IPX7), proofed against splashes, showers and sprays. Due to the high waterproof level, it is easy to clean this Seedling Heat Mat,More waterproof and easy cleaning. Name: Plant Heat Mat Voltage:AC220V/AC110V Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on. Colour:Black&Green Material:PVC Package Contents: 1 x Adjustable Plant Heating Mat 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.