LILYGO T-Relay 5V 8-Channel
ESP32-WROVER-E development board with 8 optocoupler-isolated 5V relay channels (HRS4H-S-DC5V), Wi-Fi, BLE 4.2, 8MB PSRAM, and support for DC 12–24V power input for industrial automation.
$15.99
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Specifications
Components
ESP32 module with 4MB Flash, 8MB PSRAM, integrated Wi-Fi b/g/n and BLE 4.2
8-channel 5V coil relay with optocoupler isolation; switches AC 250V/DC 28V; LED indicator per channel
Bus Interfaces
GPIO Map
Overview
The LILYGO T-Relay 5V 8-Channel is an ESP32-based relay control board featuring eight optocoupler-isolated HRS4H-S-DC5V relays, each with an individual LED indicator. The ESP32-WROVER-E module provides Wi-Fi and Bluetooth connectivity alongside 8MB PSRAM for data-intensive tasks. Each relay channel is independently addressable via GPIO and can switch AC loads up to 250V or DC loads up to 28V. The board accepts DC 12–24V power input, making it suitable for direct integration into industrial control cabinets and smart home automation panels without additional voltage conversion.
Use Cases
5home-automation
Industrial Automation
Boards designed or suitable for industrial control, automation, and embedded systems in harsh environments.
Smart Building
Automating and monitoring building systems including HVAC, lighting, occupancy, and energy usage with networked IoT devices.
Smart Switch
Build WiFi or BLE controlled relay boards for switching lights, appliances, and HVAC.
HVAC Control
Smart HVAC control systems for monitoring and managing heating, ventilation, and air conditioning.
Where to Buy
Available Software
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