Descriptions:  Smart Sensor Kit Wireless WIFI Gateway Door Sensor Smart Home System,433Mhz.      Specification:   Standard: No adapter;  Supported OS: iOS 9.0/Android 4.0 and above;  Operating Related Humidity: ≤85%;  Operating Temperature: 0~50 ℃;  Technical Parameters: Gateway;  Product Name: Smart Home Gateway:  Input Voltage: 5VDC 1A;  Output Vlotage: 5VDC 0.8A;  Max Communication Distance: 50m(in the open environment);  Wireless Communication: Wi-Fi 802.11b/g/n (2.4GHz) RF 433MHz;  Multi Sensor:  Product Name: Removable Multi Sensor;  Standard: No adapter;  Power Supply: 4.5VDC;  Transmission Frequency: 433MHz(default);  Modulation: FSK;  Max Communication Distance:   50m(in the open environment);  433MHz Door Sensor;  Product Name: Intelligent Door Sensor;  Standard: No adapter;  Wireless Transmission Distance: 60m(in the open environment);  Working Voltage: 3V DC (1*CR2450);  Transmission Frequency: 433MHz(default);    Package Includes:  1 * Gateway;  1 * Multi Sensor;  1 * 433MHz Door Sensor