Features:  System • Main Processor Embedded MCU processor Button • Button Type Mechanical button 2 Port • Power Output Port 5V DC (Provide power for other modules) Regular • Power Supply Mode 5V DC (Provided with power by other modules) • Color Silver • Dimensions 100mmЧ49.90mm Ч30.50mm Protection Grade • IK07; IP65 (Apply silica gel to gaps between the device and the wall. Liquid sodium silicate is recommended. For details, see the quick start guide.) • Operating Temperature -20°C to +60°C (-4°F to +140°F ) • Operating Humidity 10%RH–90%RH • Power Consumption 1W