All-in-one Walkie Talkie Module Kit SA828 VHF FM Transceiver Small Volume Embedded Wireless Interphone Module

Feature: Full frequency band 400~480 MHZ/134~174MHZ Transmit receive frequency independent Bandwidth 12.5/25 KHz Output power up to 1W Open distance is 4-5 km High receiving sensitivity: -124dBm Highly integrated small volume 38-level CTCSS analog sub-audio code (available with PC software and serial port) 166-level CDCSS digital sub-audio (PC software and serial port can be set) 8-level squelch Volume external potentiometer adjustment High and low power options (500mW-lW) Wide range of operating voltage 3.3-5.5V Built-in EEPROM, data power-down save Stable with 1.5ppm 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 C Current consumption Sleep current