LilyGo TTGO T-Relay ESP32 Dev Board with 4x 5V DC Relays

This is a TTGO Development Board with 4x 5V relays which can be controlled wirelessly. The integrated ESP32-Wrover-B offers full Bluetooth and Wi-Fi connectivity. The HRS4H-S-DC5V relays each have a blue status LED, which indicates whether they are currently switched on or off. The board is programmed via a USB-C port. It can also communicate via all common MCU interfaces such as UART, SPI, I2C, etc. 

Info: Since the module does not contain a USB to Serial chip, you will need a T-U2T USB to TTL adapter for programming. If you have already purchased one along with another display, you can, of course, use it for this as well. The T-U2T USB to TTL automatic downloader is not included with the display. 

Recommended Accessories: 

• LilyGo TTGO T-U2T USB to TTL Programmer CH9102

Features: 

• 4x DC 5V relays 
  
• ESP32 with Bluetooth and Wi-Fi 
  
• USB-C interface 

Documentation: 

• Github

Pinout LilyGo ESP32 T-Relay:

Technical Details: 

• Manufacturer: Lilygo 
• Manufacturer SKU: H516 
• MCU: ESP32-Wrover-B 
• Relays: 4x HRS4H-S-DC5V 
• Input voltage: 12-24V, 5V USB 
• Power consumption: 360-450mW 
• Programming: T-U2T Adapter 
• Relay Ports: GPIO21, GPIO19, GPIO18, GPIO05 
• Wi-Fi standard: 802.11 b/g/n 
• Bluetooth standard: BLE V4.2 
• BUS Interfaces: UART, SPI, I2C, CAN, I2S, SDIO 
• Dimensions: 91 x 85 x 17.5mm 
• Weight: 114g 

Scope of Delivery;  

• 1x LilyGo TTGO T-Relay ESP32 Dev Board with 4x 5V DC Relays