SA818 Wireless Walkie Talkie Module UHF 400-480 MHz VHF 134-174MHz Audio Module
Tax included.
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:
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 MHZ
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, inverted CDCSS digital sub-audio
8-level 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
Stable with 1ppm TCXO crystal
Applications:
Small walkie talkie
Ignore the intercom system
Building community security system
Outdoor sports products
Audio monitoring system
| Parameter | Test Conditions | MIN. | Typical | MAX. | UNIT |
| Operating voltage range | 3.3 | 4.2 | 5.5 | V | |
| Operating temperature range | -30 | 25 | 70 | ??/span> | |
| Current consumption | |||||
| Sleep current | ≤1 | uA | |||
| Receiving current | 60 | mA | |||
| Emission current (high power) | 650 | 750 | mA | ||
| Emission current (low power) | 450 | 550 | mA | ||
| Emission frequency parameter | |||||
| Operating frequency range | UHF | 400 | 480 | MHZ | |
| Operating frequency range | VHF | 134 | 174 | MHZ | |
| Transmit power (high power) | @VCC=4.0V | 28 | |||