Features: Automatically window opener of greenhouse. Greenhouse sensor. Specifications: Material: ABS plastic Weight: 180 g Notes: 1. Due to the various visual display unit and lightweight effect,the precise colour of the object is probably slightly various from the color whichis showed at the pictures. Thank you! 2. Please forgive 1 cm/0.39"-3 cm/1.18"measuring deviation due to handbook measurement. 3. Very welcome to touch our pricey visitor servicestaff while you would like to know more about our products! 1 X Greenhouse Replacement .