Free Shipping

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


To confirm that this part fits your vehicle, please enter your vehicle's details below.

  • Year:


    • Make:


      • Model:


        • Submodel:


          • Trim:


            • Engine:


              • Clear All
              This part is compatible with 0 vehicle(s).
              Show all compatible vehicles
              This part is compatible with 1 vehicle(s) matching
              This part is not compatible with
              Recent searches

                • Year
                • Make
                • Model
                • Submodel
                • Trim
                • Engine

                  Item Overview:
                  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.
                  ● VHF band 134~174 MHZ
                  ● 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 VHF Wireless Transceiver Module

                  Leave a Comment