Before you order, please note it: This is Ecological chain brand product, shipping without packing and no any logo on it. Thanks for your understanding. Description: Qingping BT gateway is a good partner of BT child devices to organize them in this control center. Connected with multiple devices, it can detect the temperature and moisture in house to decide whether to turn the air conditioner on and can turn the light on when sensing the door is open, serving as a smart helper in the house. Features: The data can be checked from APP remotely A central control center of all child devices to organize smart home It can access to the child devices automatically within the BT distance Connected with the smart door lock, the notification of unlock, door lock situation etc will send to the APP instantly Small size and simple design make it look like an adapter, easy to install. Specifications: Product name: Qingping BT Gateway Product size: 62*42*31mm / 2.4*1.6*1.2inches Product weight: 46g Working temperature: -10~40 Working moisture: 0%~90%RH CMIIT ID: 2019DP6512 Voltage: 100-240V(US two-pin plug) Wireless connection: BT4.2 WiFi IEEE802.11b/g/n2.4GHz Package size: 44*35*68mm / 1.7*1.3*2.6inches Package weight: 55g Note: Item color may show slight aberration due to different shooting light and monitor display. How to use Home / APP: -Download the APP on the Google Play or APP Store. -The APP supports muti-language setting -If APP connection fails, please switch the region to China on the APP setting, then reconnect. Package List: 1 * Gateway 1 * Manual(Chinese)