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

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Product details

This is a TTGO development board with 4x 5V relays which can be controlled wirelessly. The integrated ESP32-Wrover-B has full Bluetooth and Wi-Fi connectivity. The HRS4H-S-DC5V relays each have a blue status LED to show you if they are switched or not. The board is programmed via a USB-C port. It can also communicate via all common MCU interfaces like UART, SPI, I2C etc.

Info: Since there is no USB to serial chip on the module, you need a T-U2T USB to TTL adapter for programming. If you have already purchased this together with another display, you can of course use it for this one 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

Technical Details:
Manufacturer: Lilygo
Manufacturer SKU: H516
MCU: ESP32-Wrover-B
Relay: 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.

Key specifications

Development board type
Board
Processor type
ESP32

General information

Item number
25075480
Manufacturer
Lilygo
Category
Single board computer kits
Release date
6.4.2023

Development board properties

Development board type
Board
Processor type
ESP32

Power supply

Operating voltage
24 V

Wireless transmission

Wireless transmission
Bluetooth, Wi-Fi
Wi-Fi standard
Wi-Fi 1 / 802.11b, Wi-Fi 3 / 802.11g, Wi-Fi 4 / 802.11n

Connections

USB ports
USB-C
Digital outputs
21

Origin

Country of origin
China

Voluntary climate contribution

CO₂ emissions
95.84 kg
Climate contribution
CHF 1.64

Scope of delivery

Scope of delivery
1x LilyGo TTGO T-Relay ESP32 Dev Board with 4x 5V DC relays
Additionally required (not included)
T-U2T USB to TTL Programmer CH9102

Product dimensions

Weight
114 g

30-day right of return
24 Months Warranty (Bring-in)

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Single board computer kits» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 9.WaveShare
    0.3 %
  • 11.Arduino
    0.4 %
  • 11.Lilygo
    0.4 %
  • 11.M5Stack
    0.4 %
  • 14.Shelly
    0.5 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • Lilygo
    Not enough data
  • 1.Arduino
    0 days
  • 1.M5Stack
    0 days
  • 3.HutoPi
    1 day
  • 3.WaveShare
    1 day

Return rate

How often is a product of this brand in the «Single board computer kits» category returned?

Source: Digitec Galaxus
  • 15.Seeed Studio
    1.4 %
  • 15.WaveShare
    1.4 %
  • 17.Lilygo
    1.6 %
  • 18.Whadda
    2.5 %
  • 19.Espressif
    2.8 %
Source: Digitec Galaxus