This is a professional antenna wireless transceiver moudle, with built-in 2.4Ghz antenna. Its maximum operating speeds up to 2Mbps and it has GFSK modulation efficiency, anti-interference ability, particularly suitable for industrial control applications. 125 Channels, Multi-point communication and frequency hopping to meet the communication needs and built-in CRC error detection, Multipoint communication address control.Low-power 1.9 ~ 3.6V, only 1uA on power down mode.It is really a wonderful wireless transceiver moudle for choice. Features - Color: as shown in the pictures. - Size: 34mm * 17mm * 1mm. -Maximum operating speeds up to 2Mbps. - GFSK modulation efficiency, Anti-interference ability, Particularly suitable for industrial control applications. - 25 Channels, Multi-point communication and frequency hopping to meet the communication needs. - Built-in CRC error detection, multipoint communication address control. - Built-in 2.4Ghz antenna and voltage regulator. - Signal output indicator. - Applications: car alcohol alarm, and breathalyser. - Standard DIP Pitch Interface for embedded applications. - Low-power 1.9-3.6V, only 1uA on Power down mode. - Available software to set the address, only received local Address when output data(Provide interrupt instruction), can be directly connected to a variety of microcontrollers, Software programming is very convenient .