Description
null>>>Manual: Click here to open<<<Introduction:
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.
Feature:
UHF band 400~480 MHZTransmit receive frequency independentBandwidth 12.5 KHzOutput power up to 1WOpen distance is 4-5 kmHigh receiving sensitivity: -124 dBmHighly integrated small volume38-level CTCSS analog sub-audio code166-level positive phase, inverted CDCSS digital sub-audio8-level squelch8-level adjustable volumeHigh and low power options (500mW-1W)Wide operating voltage 3.3-5.5 VBuilt-in EEPROM, data power-down saveStable with 1ppm TCXO crystal
Applications: Small walkie talkieIgnore the intercom systemBuilding community security systemOutdoor sports productsAudio monitoring system
ParameterTest ConditionsMIN.TypicalMAX.UNITOperating voltage range 3.34.25.5VOperating temperature range -302570?Current consumptionSleep current ?1 uAReceiving current 60 mAEmission current (high power) 650750mAEmission current (low power) 450550mAEmission frequency parameterOperating frequency rangeUHF (this item)400 480MHZOperating frequency range
