SWITNEX Smart WiFi 2-Channel Relay Module with Bluetooth Transmitter User Manual
SWITNEX Smart WiFi 2-Channel Relay Module with Bluetooth Transmitter User Manual
| Technical Data | |
|---|---|
| Dimensions (L x W x H) | 60 x 32 x 17 mm (2.4 x 1.3 x 0.7 inches) |
| Weight | 118 grams (approx.) |
| Input Voltage | DC 5V (via USB) or DC 7V-48V (via screw terminals) |
| Current Rating | 10A per relay |
| Contact Type | Normally Open (NO), Common (COM), Normally Closed (NC) |
| Wireless Connectivity | Wi-Fi 2.4GHz, Bluetooth |
| App Compatibility | eWelink (Android & iOS) |
| Voice Assistant Compatibility | Amazon Alexa, Google Home |
| Operating Modes | Toggle Mode, Inching Mode |
| Certification | CE |
Product Detail
- 2-channel relay module – compact design (60x32x17mm), two independent relays
- Bluetooth remote control (RM2.4G) – buttons 1, 2, ALL ON, ALL OFF
- NO (Normally Open) pin – contact open when relay de-energized
- COM (Common) pin – common terminal for relay contact
- NC (Normally Closed) pin – contact closed when relay de-energized
- Relay indicator light – illuminates when corresponding relay is active
- Pairing button – (also “Open the key”) for Wi-Fi and Bluetooth pairing
- WiFi network indicator light – shows Wi-Fi connection status
- Power input options: Micro USB (DC 5V/0.5A) or +V/-V screw terminals (DC 7V-48V)
Wiring Diagram
- Power input (USB) : Connect micro USB cable to 5V/0.5A adapter
- Power input (DC 7V-48V) : Connect positive (+) to +V, negative (-) to -V
- Relay output (dry contacts) : Connect device control circuit to NO/COM/NC
- Each relay independent: Channel 1 (NO1, COM1, NC1), Channel 2 (NO2, COM2, NC2)
Warning
- Always disconnect power before performing any wiring or maintenance.
- Do not exceed the maximum relay rating of 10A at 250V AC or 30V DC.
- Ensure input voltage is within DC 5V (USB) or DC 7V-48V (terminal).
- Install in a dry, well-ventilated area away from moisture and extreme temperatures.
- If unsure about wiring, consult a qualified electrician.
- This module supports 2.4 GHz Wi-Fi only (does not work with 5 GHz networks).
Operating Mode
The module supports two main operating modes, configurable via the eWelink app.
Toggle Mode (Self-Locking)
Each press of a button (app, voice, or remote) toggles the relay state – ON to OFF or OFF to ON. Suitable for lights or devices that stay on until manually turned off.
How to configure: In eWelink app, select Toggle mode for the desired channel.
Inching Mode (Momentary)
The relay turns ON for a set duration (e.g., 0.5 seconds to 3600 seconds) after a button press, then automatically turns OFF. Ideal for garage door openers or electric locks. Duration configurable in eWelink app.
How to configure: In eWelink app, select Inching mode and set desired duration.
APP Control (eWelink)
- Download eWelink app from app store or scan QR code.
- Register an account and log in.
- Power on the module.
- Press and hold the pairing button for 5-7 seconds until the Wi-Fi indicator blinks rapidly.
- In eWelink app, tap ’+’ to add device, select Quick Pairing Mode.
- Enter your 2.4 GHz Wi-Fi network password.
- Once connected, the Wi-Fi indicator becomes solid.
- App functions: turn on/off, schedule timers, share control, configure operating modes.
Bluetooth Remote Control
The included RM2.4G Bluetooth remote is pre-paired. If re-pairing is needed:
- Ensure module is powered on.
- Press and hold the pairing button until the Wi-Fi indicator blinks.
- Press any button on the Bluetooth remote. The module’s indicator light confirms successful pairing.
Remote button functions:
- Button 1 – controls Relay 1
- Button 2 – controls Relay 2
- ALL ON – turns both relays ON
- ALL OFF – turns both relays OFF
Voice Control (Alexa / Google Home)
- Open Alexa or Google Home app.
- Enable eWelink skill/service.
- Link your eWelink account.
- Discover devices.
- Voice commands examples:
- “Alexa, turn on Channel 1”
- “Hey Google, turn off Channel 2”
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Module not powering on | Incorrect power supply; Loose wiring | Check USB 5V or DC 7V-48V connections; Ensure adapter provides at least 0.5A |
| Cannot connect to Wi-Fi | 5 GHz network; Wrong password; Out of range | Use 2.4 GHz Wi-Fi; Verify password; Move closer to router; Reset and re-pair |
| App control not working | Internet down; Module disconnected | Check internet; Ensure Wi-Fi indicator is solid; Restart app |
| Voice control not responding | Account not linked; Device not discovered | Link eWelink account in Alexa/Google Home; Discover devices; Check command wording |
| Bluetooth remote not working | Low battery; Not paired; Out of range | Replace battery; Re-pair (see Bluetooth Remote Control); Move closer |
Maintenance
- Cleaning: Wipe with a soft, dry cloth. Do not use liquid cleaners or solvents.
- Environment: Keep in a dry place away from moisture, extreme temperatures, direct sunlight, and corrosive substances.
- Connections: Periodically check wiring for security and corrosion.
- Firmware: Check eWelink app for available updates.
Contact
- WhatsApp: +86 15812381273
- Email: linktrol@icloud.com
If there is any question about the products, please contact us first. We will do our best to solve your problem. Thank you.
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