SA818 VHF Ultra High Frequency 1W Wireless Walkie-talkie Module Intercom Module Embedded COD

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ID: 1411562
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                    SA818 is a cost-effective integrated professional walkie-talkie module with built-in high-speed microcontroller, high-performance RF transceiver chip and RF power amplifier, and provides standard TTL serial port to communicate with the module, which can quickly and easily set the relevant parameters of the module and Transceiver function for control. Users only need to connect an audio amplifier, microphone, and speaker to this module to work as a small walkie-talkie. The simplified interface and ultra-small size make this module widely available, and can be easily and quickly embedded in various handheld devices to improve the overall performance of the terminal products.
                    ● UHF band 400~480 MHZ
                    ● FCC, CE, IC certification
                    ● Transmit receive frequency independent
                    ● Bandwidth 12.5 KHz
                    ● Output power up to 1W
                    ● Open distance is 4-5 km
                    ● High receiving sensitivity: -124 dBm
                    ● Highly integrated small volume
                    ● 38-level CTCSS analog sub-audio code
                    ● 166-level positive phase, reverse phase CDCSS digital sub-audio
                    ● 8 levels of squelch
                    ● 8-level adjustable volume
                    ● High and low power options (500mW-1W)
                    ● Wide operating voltage 3.3-5.5 V
                    ● Built-in EEPROM, data power-down save
                    ● 1ppm TCXO crystal oscillator, stable performance
                    Technical Parameters:

                    parameter Test Conditions Minimum typical maximum unit
                    Operating voltage range   3.3 4.2 5.5 V
                     working temperature range   -30 25 70
                    Current consumption
                    Sleep current     ≤1   uA
                    Receiving current     60   mA
                    Emission current (high power)     650 750 mA
                    Emission current (low power)     450 550 mA
                    Transmitting RF parameters
                    Operating frequency range UHF  400   480 MHZ
                    Operating frequency range VHF  134   174 MHZ
                    Transmit power (high power) @VCC=4.0V 28 29.5 31 dBm
                    Transmit power (low power)   25 26.5 27 dBm
                    Modulation sensitivity @1.5Khz/2.5KHZ offset   10   mV
                    Audio modulation distortion @1.5Khz/2.5KHZ offse   2 5 %
                    Signal to noise ratio @1.5Khz/2.5KHZ offse 38 40 45 dB
                    Adjacent channel power @12.5K offset   -60dBc   dBm
                    CTCSS modulation frequency offset   0.35 0.5 0.75 KHZ
                    Receiving radio frequency parameters
                    Receiving sensitivity 13dB output voice signal ratio   -124   dBm
                    Receive signal to noise ratio @1.5KHZ frequency offset 45 50   dB
                    Audio output amplitude     700   mV
                    Audio output impedance     200   OHm

                    Number Pin definition
                    1 Audio ON
                    2 NC
                    3 AF_OUT
                    4 NC
                    5 PTT
                    6 PD
                    7 H/L
                    8 VBAT
                    9 GND
                    10 GND
                    11 NC
                    12 ANT
                    13,14,15 NC
                    16 RXD
                    17 TXD
                    18 MIC_IN
                    - Small walkie talkie
                    - Ignore the intercom system
                    - Building community security system
                    - Outdoor sports products
                    Package Included:
                    1 x UHF Wireless Transceiver Module

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