T-TWR REV2.1 Version:VHF 134-174Mhz [H710] and can be interactive

and can be interactive

Bluetooth V4

2 Onboard Functions 8 Relays Reset Button Optocoupler Isolation 16 Expansion GPIO HRS4H-S-DC5V Relay 8 Blue LEDS Relay Work Indicator K1--IO33 K2--IO32 K3--IO13 K4--IO12 K5--IO21 K6--IO19 K7--IO18  K8--IO05 Maximum switching voltage : AC: 250V

Support for Sniffer software protocol analysis

while the PCM5102 version can be driven directly through the ESP32-S3

T-TWR REV2.1 Version:VHF 134-174Mhz [H710] and can be interactiveCurrently, openrtx only supports version 2. 0, not 2. 1. Specifications MCU ESP32 S3 WR0OM 1 N16R8 Flash 16MB PSRAM 8MB Wireless protocol Wi Fi & Bluetooth 5 (LE) Onboard functions 4 Buttons (PPT+Boot + PWR + Reset) PMU AXP2102, TF Card function, WS2812 RGB LED Supply Mode USB 21700 battery 18650 battery + spring L76K GNSS Module Support GPS, BDS, GLONASS, Built in LNA, SAW Filter, AGNSS and 1PPS 1. 3 inch SH1106 OLED Resolution 128x 64 I2C Interface