Gledopto Synergy 21 LED-controller EOS 55 WLED ESP32 Pixel (GL-C-015WL)

For smart-home enthusiasts and lighting professionals building addressable LED pixel installations, the Gledopto Synergy 21 EOS 55 controller brings ESP32 power and WLED firmware to a compact screw-terminal device. It drives one data line of WS2812B, SK6812, APA102 and similar LEDs at up to 5 A total from a 5–24 V DC supply, with Wi-Fi control via the WLED app, web interface, MQTT, JSON API or UDP.

Key specifications

• Microcontroller: ESP32, pre-flashed with WLED
• Connectivity: Wi-Fi 2.4 GHz 802.11b/g/n
• Input voltage: DC 5–24 V
• Max output power: 55 W
• Max output current: 5 A total
• Supported LED types: WS2811, WS2812B, SK6812, TM1814, APA102 and more
• Pixel outputs: 1 (data line)
• Control methods: WLED app (iOS/Android), web interface, MQTT, JSON API, UDP
• Power input connector: screw terminals
• LED output connector: screw terminals (power & data)
• Operating temperature: -20 °C to 60 °C
• Material: ABS plastic
• Features: 100+ dynamic effects, music synchronization, timer functions, custom palettes
• Smart home compatibility: Home Assistant, OpenHAB, Node-RED (via WLED)
• Protection: reverse polarity, short circuit
• Dimensions (L x W x H): 72 x 23 x 12 mm

Why choose it

With WLED pre-installed, the EOS 55 removes the need for manual flashing and works out of the box with popular pixel LED strips. Its wide voltage range and 5 A capacity support both small accent projects and larger runs, while screw terminals make wiring secure and serviceable.

Ideal use cases

• DIY smart lighting with addressable LED strips
• Accent and ambient lighting in home automation setups
• Prototyping pixel-based effects for events or displays
• Integration with Home Assistant or Node-RED for advanced automations

Good to know

The controller is powered by an external DC supply (not included) and requires a separate LED strip. It is certified CE and RoHS, and its ABS housing measures 72 x 23 x 12 mm.