WL-TTGO-T-8RELAY, LILYGO TTGO T-Relay ESP32 Wireless 8-Channel Relay Module with Optocouplers

LILYGO TTGO T-Relay ESP32 Wireless 8-Channel Relay Module with Optocouplers

This 8-channel relay board is based on the ESP32-WROVER-B which is a powerful, generic WiFi + Bluetooth + Bluetooth LE MCU module that targets a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming and MP3 decoding.

ESP32-WROVER-B comes with a PCB antenna. It features a 4MB external SPI flash and an additional 8MB SPI Pseudo static RAM (PSRAM).

This relay board allows the control of higher voltage devices such as motors and lights without any risk of damage to the controller.

The optocouplers on the board allow for the GPIO signals from the MCU to trigger the relays.

Specifications:

• MCU: ESP32-WROVER-B
• SPI Flash: 4MB
• PSRAM: 8MB
• Bus Interfaces: UART, SPI, SDIO, I2C, I2S, CAN
• Other Interfaces: USB-C, GPIO, ADC, DAC, PWM, Capacitive Touch Sensor, Pulse Counter, IR
• USB Connectivity: USB Type-C via the supplied T-U2T adapter
• Wireless: Wi-Fi 802.11b/g/n, Bluetooth BLE V4.2
• MCU Operating Voltage: 3.0 - 3.6VDC
• Power Consumption: 360 to 450mW
• Power Supply Input Range: 12 - 24VDC
• No. of Relay Channels: 8
• Relay Type: HRS4H-S-DC5V
• Relay Trigger Signal Pins:
  • K1 Relay: GPIO33
  • K2 Relay: GPIO32
  • K3 Relay: GPIO13
  • K4 Relay: GPIO12
  • K5 Relay: GPIO21
  • K6 Relay: GPIO19
  • K7 Relay: GPIO18
  • K8 Relay: GPIO05
• Dimensions: 170 x 85 x 17.5mm (without ESP32 module)
                      175 x 85 x 17.5mm (with ESP32 module)
• Weight: 141g / 4.97 oz