Meross MS200 Smart door and window sensor WLAN

Mini design: the door and window alarm has a compact mini design that does not take up additional space on the door or window. The main sensor size is only 5.7 x 3.1 x 1.5 cm and the secondary sensor size is 2.8 x 1.5 x 1.1 cm. Attach the Smart Home Sensor anywhere one need it with the included strong adhesive tape - be it on a bedroom door, garage door, refrigerator or even a pet door