
T-Relay
LILYGO® TTGO T-Relay ESP32 Wireless Module DC 5V 4 Groups Relay Development Board 4MB Flash WiFi Bluetooth Remote Switch Control Specifications MCU ESP32 FLASH 4MB PS RAM 8MB Bus Interfaces UART, SPI, I2C, CAN, 12S, SDIO Wireless Wi-Fi 802.11 b/g/n Bluetooth BLE V4.2 Onboard Functions 4 Groups of relays Optocoupler Isolation 16 Expansion GPIO HRS4H-S-DC5V Relay: 4 Blue LEDs Relay Work Indicator①K1 Relay: GPIO21②K2 Relay: GPIO19③K3 Relay: GPIO18④K4 Relay: GPIO05 Support T-U2T Upload Tool:Computer->USB Type-C data cable->Needs to be connected to T-U2T [USB toserial] downloader to program , convenient, fast;USB data line can be directly powered Technology Support [Github] If you need technical support please check the link to find more details. T-Relay 1. Size T-Relay W5500 Shield 2. More Details 3. Pin Diagram T-Relay 1 x Relay 2 x pin T-Relay T- U2T Kit 1 X Relay 2 x Pin 1 X T- U2T USB to TTL T-Relay W5500 Shield