This is the Hitec WiFi Module. FEATURES: Compatible with the Hitec X2 AC Plus & X2 AC Pro Chargers Allows user to view, change and customize charger options via smartphone Supports iOS and Android devices Two year limited warranty through Hitec beginning at date of purchase INCLUDES: Hitec WiFi Module with Cable SPECS: Input Voltage: 5-17V Input Current: 200mA Working Temp: 0-50° Storage Temp: 14-176°F (-10-80°C) Dimensions: 2.38 x 1.18 x 0.43" (60.4 x 30 x 11mm) Weight: 0.42oz (12g)