App Control for Your Kessil X-Series Lights. One Dongle. Up to 32 Fixtures.
Unlock the full power of your Kessil X-Series reef lights with the Kessil WiFi Dongle — the small plug-in module that adds complete smartphone app control to the A360X, A360XE, and A500X, networking up to 32 fixtures through a single wireless connection.
Designed for reef keepers who want more than the manual knobs, the WiFi Dongle plugs directly into your fixture's K-Link port and connects it to the Kessil app for iOS and Android. Build custom schedules, fine-tune every color channel, group multiple lights, and run advanced programs — all from your phone, from anywhere in the house.
Whether you run one A360XE over a mixed reef or a row of A500X fixtures over an SPS system, one WiFi Dongle puts the whole array under app control.
Why add the Kessil WiFi Dongle?
One Dongle Controls Up to 32 Lights
The WiFi Dongle uses the same K-Link communication as a wired connection, but wirelessly. Plug it into one X-Series fixture, K-Link the rest together, and all of them — up to 32 lights — follow one program from one dongle. No box of dongles, no cables to a controller.
Faster, More Reliable Connection
By networking your lights through K-Link instead of connecting each fixture individually, the WiFi Dongle minimizes wireless interference and delivers a faster, more reliable connection to the app.
Full App Control
The Kessil app gives you advanced manual control and complete program customization:
- Customizable daily lighting schedules
- Sunrise and sunset effects
- Full control of individual color channels — Tuna Blue plus red, green, and purple on supported fixtures
- Coral acclimation mode for safely introducing new corals or new lights
- Lunar cycle simulation
- Weather effects
- Group and sync multiple fixtures so the whole tank runs one seamless program
Neptune Apex Integration
The WiFi Dongle also connects your X-Series lights to the Neptune Systems Apex. Through the APEX IoTA interface, your Kessils integrate into your Apex system for centralized control alongside the rest of your equipment.
Plug In and Go
No tools, no rewiring. The dongle plugs into the K-Link port on your fixture and draws its power from the light — download the app, connect, and you're programming in minutes.
Compatibility — please read before ordering
The WiFi Dongle works with Kessil X-Series fixtures with a K-Link port: A360X, A360XE, A500X, and A360X Refugium. The AP9X has WiFi built in and does not need a dongle, but it can be grouped in the app with dongle-controlled lights. The WiFi Dongle is not compatible with the A160WE or A80 — those fixtures are controlled by their onboard knobs, the Spectral Controller X, or a 0–10V controller. Not sure which controller your light needs? Ask us before you order and we'll match it.
Technical Specifications
Model: Kessil WiFi Dongle (KSAWD01)
Function: Wireless app control for Kessil X-Series LED fixtures
Compatible fixtures: A360X, A360XE, A500X, A360X Refugium
Capacity: Up to 32 X-Series fixtures per dongle (via K-Link)
Connection: Plugs into fixture K-Link port
App: Kessil app for iOS and Android
Features: Schedules, full color control, grouping, acclimation mode, lunar cycle, weather effects
Apex integration: Neptune Apex via IoTA (through the dongle)
Recommended Applications
Any reef aquarium running Kessil X-Series fixtures
Multi-light SPS and mixed reef systems
Reef keepers upgrading from manual knob control to scheduled programs
Apex users who want their Kessil lights inside one system
What's Included?
Kessil WiFi Dongle
Verify the final package contents against the specific WWC supplier SKU before publishing. K-Link cables and fixtures sold separately.
WiFi Dongle or Spectral Controller X — which one?
Choose the WiFi Dongle if you want app control from your phone, grouping across up to 32 lights, and Apex integration. Choose the Spectral Controller X if you prefer a dedicated wired controller with its own screen and no phone involved. Many reef keepers run both ecosystems across different tanks — and if you're deciding, tell us which fixtures you own and the World Wide Corals team will point you to the right one.
Why Buy Your Kessil WiFi Dongle from World Wide Corals?
At World Wide Corals, we understand reef aquariums because we operate them every day.
We're more than an aquarium retailer. We're an established coral aquaculture facility with hands-on experience in the equipment, technology, and systems that help successful reef aquariums thrive.
When you shop with World Wide Corals, you're purchasing from a team that understands the importance of proper reef lighting, coral health, and long-term aquarium performance.
Build a better reef. Shop professional reef equipment at World Wide Corals.
