ITEM NAME:433MHz Wireless Serial Port Module HC-11 H6N7 433MHz Wireless Serial Port Module HC-11 H6N7 Support one-to-many, many-to-one and many-to-many transmission 433MHz wireless frequency, 5-pin design Working Voltage: 2.95V~3.6V DC Default Baud Rate: 9600 (value resettable) Size: Approx. 51 x 13 x 11 mm Wireless serial port module is used to implement wireless data transmission instead of serial connecting wire. This serial port module carries out wireless communication via 433MHz frequency and supports one-to-many, many-to-one, many-to-many transmission modes. Package Included: 1 x Wireless Serial Po Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..433MHz wireless frequency, 5-pin design. This serial port module carries out wireless communication via 433MHz frequency and supports one-to-many, many-to-one, many-to-many transmission modes. Size: Approx.