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Nexa Retrofit 3 Switch — product pageDesigned page · specs & gallery
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NEXA 3SNEXA 3S 23mm
Overview
NEXA Retrofit 3 Switch
The NEXA Retrofit 3 Switch is a three-channel WiFi smart switch module that installs behind an existing switchboard in approximately 15 minutes, converting three ordinary switches into app-controlled, voice-enabled, schedule-ready smart switches — with no new wiring, no new switch plates, and no civil work. It is part of Beakn's NEXA Retrofit range, the most affordable wifi smart switch line in the Beakn portfolio, and is sized and recommended for a small bedroom. Like every NEXA variant, it runs entirely on Beakn's own in-house platform — not Tuya or any white-label system — and comes with all 20 app features included free, with no subscription.
What's in the box
What's in the box
No box contents were provided in the knowledge bank.
Compatibility
Compatibility
Voice assistants
•Google Assistant
•Amazon Alexa
•Apple Siri (including Siri Shortcuts, Apple Focus Modes, CarPlay)
Connectivity
•WiFi — direct to cloud; no hub required
•Works on standard 2.4GHz WiFi networks
Switching configurations
•Standard single-switch setups
•2-way switching setups (supported on all NEXA variants)
Load compatibility
| Load type | Compatible | Per-channel limit |
|---|---|---|
| LED lighting | ✅ | 120W / 6 units |
| Incandescent / resistive lighting | ✅ | 800W |
| Fans (on/off) | ✅ | 400W (inductive) |
| General appliances | ✅ | 800W resistive / 400W inductive |
| ACs / geysers | ❌ |
The NEXA 3 Switch controls fans as a simple on/off load. It does not include a built-in fan speed regulator. For app-controllable fan speed, choose the 1+1, 2+1, or 4+1 combo variants. Do not use the NEXA 3 Switch (10A) for ACs, geysers, or other heavy appliances. For those loads, use the NEXA HD 25A.
Specifications
| Channels | 3 |
|---|---|
| Relay rating | 10A per channel |
| Operating voltage | 240V AC, 50/60Hz |
| Neutral wire | Required at the switchboard |
| Module thickness | 23mm |
| Max load — incandescent / resistive | 800W per channel |
| Max load — LED | 120W or 6 units per channel |
| Max load — inductive | 400W per channel |
| Power supply | Isolated SMPS |
| Standby power | < 0.8W |
| Surge protection | 2.5KV rated; tested up to 4KV |
| 2-way switching | Supported |
| Connectivity | WiFi — direct to cloud, no hub required |
| Offline control | Yes — schedules, timers, and wall switch work without internet |
| Voice assistants | Google Assistant, Amazon Alexa, Apple Siri |
| App features | 20 included free — no subscription |
| Warranty | 3 years |
| Recommended use | Small bedroom |
All 20 app features are included free with the NEXA 3 Switch — no subscription, no premium tier, no in-app purchases.
Schedules — set on/off times for any day or time combination
Auto-off timers — fire even when a load is switched on at the physical wall switch
Countdown timers — time-based cutoffs for any channel
Sunrise/sunset triggers — location-aware time-based automation
Multi-step routines — sequences of actions across channels
One-tap scenes — activate a preset state across multiple devices instantly
Sensor-driven workflows — trigger actions based on connected sensor inputs
Scene-trigger conversion — a physical switch press fires a scene rather than just toggling the load
Safe Mode voltage protection — disconnects enrolled appliances if voltage rises above 280V or falls below 200V
Lock Room alerts — sends a notification if a locked switch is toggled manually at the wall
Full offline mode — schedules, timers, and wall switches continue working without internet
Running-hours tracking — per channel, so you know how long each load has been on
Estimated energy cost — approximate cost based on running hours and load
Full ON/OFF history — a log of every switch event per channel
Intelligent reminders — usage-based prompts and alerts
Siri Shortcuts — including Apple Focus Modes and CarPlay integration
Google Assistant — voice control via Google Home ecosystem
Amazon Alexa — voice control via Alexa ecosystem
NFC tag control — tap an NFC tag to trigger actions without opening the app
Home-screen shortcuts — quick-launch controls directly from your phone's home screen
Installation
Installation
What is required
•A neutral wire must be present at the switchboard — this is mandatory for all NEXA variants. Most Indian switchboards already have one; an electrician confirms this during installation.
•An existing standard switchboard (no new plates, drilling, or plastering needed).
•A WiFi network (2.4GHz) in range of the switchboard.
Installation process
1.Electrician opens the existing switchboard.
2.The 23mm NEXA 3 Switch module is placed behind the existing switch plate.
3.Wiring is connected — line, neutral, and three load outputs.
4.The board is closed. Physical switches remain in place and continue to work normally.
5.Module is commissioned in the Beakn app (~15 minutes total).
After installation
•Physical wall switches continue to work exactly as before.
•App, voice, and scheduling control are added on top.
•2-way switching is supported — the NEXA 3 Switch works in 2-way switch setups (e.g. a staircase or room with two switch points).
Free installation
Beakn offers free installation in 8 cities. Check Beakn's website or app for covered cities and to book.
Wiring limits (per channel)
| Load type | Maximum |
|---|---|
| Incandescent / resistive | 800W |
| LED lighting | 120W or 6 LED units |
| Inductive (fans, motors) | 400W |
Do not use the NEXA 3 Switch (10A) for ACs, geysers, or other heavy appliances. For those loads, use the NEXA HD 25A.
User Manual
Manual
No separate manual was provided in the knowledge bank.
Configuration
Configuration
App and platform
•Runs entirely on Beakn's own in-house app, cloud, and firmware.
•It is not Tuya-based or white-label.
•All 20 app features are included free — no subscription, no premium tier, no in-app purchases.
•Indian technical support is available.
Control and automation
•Schedules
•Auto-off timers
•Countdown timers
•Sunrise/sunset triggers
•Multi-step routines
•One-tap scenes
•Sensor-driven workflows
•Scene-trigger conversion
•Safe Mode voltage protection: disconnects enrolled appliances if voltage rises above 280V or falls below 200V
•Lock Room alerts: sends a notification if a locked switch is toggled manually at the wall
•Running-hours tracking per channel
•Estimated energy cost based on running hours and load
•Full ON/OFF history per channel
•Intelligent reminders
•Siri Shortcuts, including Apple Focus Modes and CarPlay integration
•Google Assistant voice control via Google Home ecosystem
•Amazon Alexa voice control via Alexa ecosystem
•NFC tag control
•Home-screen shortcuts
Local behavior
•Offline control is supported.
•Schedules, timers, and wall switch work without internet.
•Local app control on the same WiFi network also works.
•Only remote access from outside the home requires internet.
Reset
Reset
No reset procedure was provided in the knowledge bank.
Troubleshooting
Troubleshooting
•If installing for the first time, a neutral wire must be present at the switchboard — this is mandatory for all NEXA variants.
•The module is 23mm thick; an electrician will confirm fit during the 15-minute install.
•Ensure a WiFi network (2.4GHz) is in range of the switchboard.
•If the load is an AC, geyser, or other heavy appliance, the NEXA 3 Switch (10A) is not suitable; use the NEXA HD 25A.
•If fan speed control is needed, the NEXA 3 Switch only supports fan on/off, not fan speed regulation.
•The module has 2.5KV rated surge protection and has been tested up to 4KV.
FAQ
Q: Is the NEXA 3 Switch right for my small bedroom?
Yes — the 3-channel module is specifically recommended for a small bedroom. It gives you independent app and voice control over three loads (e.g. main light, secondary light, and fan on/off). If you also want app-controllable fan speed, consider the 2+1 (2 switches + 1 fan regulator) instead.
Q: Does the NEXA 3 Switch include a fan speed regulator?
No. It controls a fan as a simple on/off load (like any other channel). For built-in 5-step capacitive fan speed control, choose the 1+1, 2+1, or 4+1 combo variants, which are unique to the NEXA range.
Q: Does it need a neutral wire?
Yes — a neutral wire is required at the switchboard. This applies to all NEXA variants. Most Indian switchboards already have one; your electrician will confirm during the ~15-minute install.
Q: Does it work without internet?
Yes. Physical wall switches work normally at all times. Schedules, auto-off timers, and countdown timers run locally on the module and fire even without internet. Local app control on the same WiFi network also works. Only remote access from outside the home requires internet.
Q: Can I use it for my AC or geyser?
No. The NEXA 3 Switch is a 10A module rated for lights, fans, and general loads. For ACs or geysers, use the NEXA HD 25A (up to 25A). For 16A loads, see the Low Profile Retrofit range.
Q: Is there a monthly subscription for the app features?
No. All 20 app features are included free forever — no subscription, no premium tier, no in-app purchases.
Q: Will my existing switch plates and wall switches still work?
Yes. The module installs behind the existing board. Switch plates stay unchanged. Physical switches continue to function normally — you simply gain app and voice control on top.
Q: Does it support 2-way switching?
Yes. 2-way switching is supported on the NEXA 3 Switch, as on all NEXA variants.
Q: Is this a Tuya or white-label product?
No. The NEXA runs entirely on Beakn's own in-house app, cloud, and firmware. It is not Tuya-based or white-label. Indian technical support is available.
Q: What surge protection does it have?
The NEXA 3 Switch is 2.5KV rated and tested up to 4KV, protecting the module and connected loads from common voltage spikes.
Q: How much power does it draw on standby?
Less than 0.8W — negligible running cost when loads are off.
Q: How thick is the module — will it fit behind my existing board?
The module is 23mm thick. An electrician will confirm fit during the 15-minute install; no drilling or plastering is required.