Description: Material: Experimental Board + Mixed Alloy Color: Black Chip Module: CP2102 Working Temperature: -40 ℃ ~ +125 ℃ Power Input: 4.5V ~ 9V (10VMAX), USB-powered Drive Type: Dual high-power H-bridge driver Current: continuous transmission ≈70mA (200mA MAX) Standby: <200uA Size: (L)X(W)4.8X2.5cm/1.89”X0.98”(appr.) Features: A great set of tools to develop ESP8266. ESP8266 has IO Pin. ESP8266 full IO mouth leads directly download without resetting. Open-source, interactive, programmable, low cost, simple, smart, WI-FI enabled. Greatly speed up your IOT application developing process.