400~470MHz Walkie Talkie Demo Board Kit 2W Power SR_FRS_2W Model A[WRL-00204]products model : WRL-00204

The SR_FRS_2W is a low cost but high performance integrated walkie talkie transceiver module. With built-in high performance microcontroller, narrow band rf transceiver, and standard Uart interface, it can be easily used and succeeds in all the walkie talkie functions with good quality voice and long distance transmission. Users only need to connect external audio amplifiers, microphone, or speaker with this module ,then it can work as a small walkie talkie with 2W output . In an open area, it can come to performance of 9Km communication. Simplified interface and ultra small size make this module into a wide range of applications. It can also conveniently embed into various handheld devices to improve the comprehensive performance of end products.

The more important feature, besides the excellent voice intercom, is this module has data/SMS transfer ability; up to 70 byte can be sent at one time. It is compliant with the standard UART transfer protocol.

Product performance:

• FM demodulation technique based on digital signal processing technology
• Frequency Range: UHF 400M-480MHZ
• Frequency step: 5K/6.25K/12.5K/25K
• RF Output Power: 2W/1W
• Voice encryption (scrambling): 8 method
• Voice Compression- Expansion
• SMS Receive/Transfer
• Wireless Baut: 1200
• CTCSS 38 group and CDCSS 83 group
• Automatic elimination tail
• Volume adjustable (1-9)
• Vox level adjustable (0-8)
• Squelch level adjustable (0-9)
• MIC sensitivity level adjustable (1-8)
• Ultra low power dissipation in Sleep Mode (0.1uA)
• Power supply: DC 3.3-5.0V
• Ultra small size: 20 * 38 * 3.2MM
• Communication distance: more than 9 KM in open area

Applications:

• Portable intercom and paging systems
• Wireless data transmission
• Mobile phones
• Other embedded-in radio functions

Additional Details:

• Module package: mechanical size
• Module pin assignment
• Typical application: block diagram 
  
• Module works with MCU. Without MCU, it works alone