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

Manual Click here to openItem 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 Features ● 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 parameterTest ConditionsMinimumtypicalmaximumunitOperating voltage range 3 34 25 5V working temperature range 302570℃Current consumptionSleep current1 uAReceiving current60 mAEmission current high power 650750mAEmission curr