1. Introducció
This manual provides detailed instructions for the installation, operation, and maintenance of your SMTONOFF Tuya WIFI 16-Channel Smart Timer Switch (Model: ATMS16M16). This device allows for smart control of up to 16 independent electrical channels, offering convenience through remote, voice, and timed operations. Please read this manual thoroughly before use to ensure proper functionality and safety.
2. Característiques clau
- Comandament a distància: Manage your devices anytime, anywhere via the Tuya Smart mobile application.
- Funcions de temporització: Set up to 30 ON/OFF programs daily or weekly, including countdown timers from 1 minute to 23 hours 59 minutes.
- Control de veu: Compatible with popular AI assistants like Amazon Alexa and Google Assistant for hands-free operation.
- Control de canal independent: Each of the 16 channels can be controlled individually through the mobile app or an external switch.
- External Switch Compatibility: Supports wired extended control using external tact switches (normally open type, not included).
- Power-On State Memory: Configurable power-on states (Remember last status, ON, OFF) with 'Remember last status' as the factory default.
- Indicator Status Settings: Customize the behavior of working indicators.
- Compartició de dispositius: Share control of the device with up to 20 users via the mobile app.
- Offline Timer Functionality: The timer retains all programmed schedules and operates accordingly even if the device is disconnected from the network.
- Funció Bluetooth: Allows for ON/OFF control via the mobile app using Bluetooth if the WiFi signal is disconnected for more than 5 minutes.

Figura 1: Mésview of Functional Features
3. Especificacions tècniques
| Atribut | Especificació |
|---|---|
| Nom de marca | SMTONOFF |
| Model | ATMS16M16 |
| Origen | Xina continental |
| Certificació | CE, FCC, RoHS |
| Plataforma Smart Home | Tuya |
| Substància química molt preocupant | Cap |
| Nombre de canals | 16 isolated channels |
| Current per Channel | 16A |
| Voltage | 100-240VAC, 50/60Hz |
| Dimensions (L x A x A) | 162 mm x 92 mm x 65 mm |
| Pes del paquet | 0.6 kg |
| Dimensions del paquet (L x W x H) | 18 cm x 18 cm x 12 cm |

Figura 2: Dimensions del producte
4. Contingut del paquet
El paquet normalment inclou:
- 1 x SMTONOFF ATMS16M16 Smart Timer Switch
- 1 x Manual d'usuari (aquest document)
Note: External tact switches are not included and must be prepared by the end-user as needed.
5. Informació de seguretat
- Ensure all wiring is performed by a qualified electrician and complies with local electrical codes.
- Disconnect power before installing or servicing the device.
- No utilitzeu el dispositiu en mullat o damp condicions.
- Do not exceed the maximum current rating of 16A per channel.
- Mantingueu el dispositiu lluny dels nens.
- Use only with compatible external switches (normally open type).
6. Instal·lació i configuració
6.1. Instruccions de cablejat
The SMTONOFF ATMS16M16 is designed for DIN rail mounting. Follow the wiring diagrams carefully. Ensure the main power supply is OFF before proceeding with any wiring.

Figure 3: Wiring Diagram for External Switches (Individual Channel & All ON/OFF)
Wiring for Individual Channels and All ON/OFF External Switches:
- Connect the Live (L) and Neutral (N) wires to the corresponding input terminals.
- For each channel (S1 to S16), connect the load to the output terminals.
- To achieve wire extended control for each channel, connect a normally open (NO) type self-reset tact switch between the corresponding 'S' terminal (e.g., S1) and the 'C' terminal (e.g., C1 for S1).
- For an 'All ON / All OFF' external switch, connect a normally open (NO) type self-reset tact switch between terminals A1 and A2.

Figure 4: Wiring Diagram for All ON/OFF External Switch Only
Wiring for All ON/OFF External Switch Only:
- Connect the Live (L) and Neutral (N) wires to the corresponding input terminals.
- For each channel (S1 to S16), connect the load to the output terminals.
- For an 'All ON / All OFF' external switch, connect a normally open (NO) type self-reset tact switch between terminals A1 and A2. Individual channel control will then be primarily via the app.
Note: The external switch input is a dry contact. Multiple tact switches can be wired in parallel for extended control from different locations.

Figure 5: Wire Extended Control Applications
6.2. Emparellament d'aplicacions
- Descarrega i instal·la l'aplicació: Download the "Tuya Smart" or "Smart Life" app from your mobile app store (available for iOS and Android). Register an account if you don't have one.
- Encendre el dispositiu: Connect the smart switch to power. The WiFi signal indicator (green LED) should start flashing fast automatically, indicating it's in pairing mode.
- Manual Pairing Mode (if needed): If the WiFi indicator does not flash fast, press and hold the 'P' button on the device for about 5 seconds until the WiFi signal indicator flashes rapidly.
- Afegeix un dispositiu a l'aplicació: Open the Tuya Smart app. It should automatically detect the new device. Tap "Add" or the "+" icon to manually add a device. Select the appropriate device type (e.g., "Switch" or "Circuit Breaker").
- Connecteu-vos a WiFi: Enter your 2.4GHz WiFi network name and password when prompted. The device will connect to your network.
- Finalització: Once successfully added, rename the device and individual channels as desired for easier management.

Figure 6: App Download and Power-On for Pairing

Figure 7: App Pairing Process
7. Funcionament
Your SMTONOFF Smart Timer Switch offers multiple control methods:

Figure 8: Control Options
7.1. Remote Control (Mobile App)
Once paired, you can control the switch from anywhere using the Tuya Smart app:
- Open the app and select your device.
- You will see individual controls for each of the 16 channels (Switch 1 to Switch 16).
- Tap the power icon next to each switch to toggle it ON/OFF.
- Use the "All ON" or "All OFF" options to control all channels simultaneously.
- You can rename each channel within the app settings for easy identification.

Figure 9: App Interface for Control and Scheduling

Figure 10: Remote Control in Action
7.2. Control per veu
Integrate your smart switch with Amazon Alexa or Google Assistant for voice commands:
- Ensure your Tuya Smart account is linked to your Alexa or Google Home app.
- Descobreix nous dispositius a l'aplicació d'assistent de veu.
- Use commands like "Alexa, turn on Switch 1" or "Hey Google, turn off all lights."

Figura 11: Integració del control per veu
7.3. Control manual
Each channel has a local manual ON/OFF switch (S1-S16) on the device itself. You can also use external tact switches wired to the device as described in the setup section.

Figure 12: Manual Control
7.4. Timing Control
The app offers various timing modes:
- Temporitzador: Set a specific time for the switch to turn ON or OFF.
- Horari: Create recurring schedules for daily or weekly operations.
- Circular: Set a cycle of ON/OFF periods.
- Aleatori: Randomize ON/OFF times within a set window for security.
- A poc a poc: Set a brief ON duration, after which the switch automatically turns OFF.

Figure 13: Timing Control Options
7.5. Power-On State and Indicator Settings
You can configure the device's behavior after a power outage and the working indicator's display:
- Navigate to the device settings in the Tuya Smart app.
- Under "Relay Status" (Power-on state), choose from: "Remember last status", "ON", or "OFF".
- Under "Light Mode" (Working indicator setting), you can choose to "Indicate switch on/off", "Indicate switch location", or "Indicator LED off".

Figure 14: Power-On State and Indicator Settings
7.6. Compartició de dispositius
To share control of your smart switch with family members or other users:
- In the Tuya Smart app, go to the device settings.
- Select "Share Device" and follow the prompts to add users.
- Up to 20 users can be granted access.

Figura 15: Compartició de dispositius
7.7. Control Bluetooth
If your WiFi connection is temporarily lost for more than 5 minutes, the device can be controlled via Bluetooth through the Tuya Smart app. Ensure Bluetooth is enabled on your smartphone and you are within range of the device.
Video 1: Demonstration of App Control and Manual Override
8. Manteniment
- Neteja: Netegeu el dispositiu amb un drap suau i sec. No utilitzeu productes de neteja abrasius ni dissolvents.
- Actualitzacions de firmware: Periodically check the Tuya Smart app for available firmware updates to ensure optimal performance and access to new features.
- Comprovació de la connexió: Regularly verify the stability of your WiFi connection to ensure seamless smart control.
9. Solució De Problemes
- El dispositiu no s'està emparellant: Ensure your WiFi network is 2.4GHz. If the indicator is not flashing fast, manually activate pairing mode by pressing the 'P' button for 5 seconds. Check your WiFi password.
- No response from app: Verify your phone's internet connection and that the device is connected to WiFi. If WiFi is disconnected, try Bluetooth control.
- Voice control issues (e.g., Alexa only reads 6 channels): This may indicate a firmware limitation or a need for a firmware update. Ensure channel names are simple and in English for better voice assistant recognition. Check for available firmware updates in the Tuya Smart app.
- External switch not working: Ensure the external switch is a normally open (NO) type self-reset tact switch and is wired correctly according to the diagrams. Verify connections are secure.
- Dispositiu fora de línia: Check your router and internet connection. If the device was recently powered off, it should reconnect automatically based on its power-on state settings.
10. Consells d'usuari
- Clear Naming: Use clear and concise English names for your channels in the app to improve voice control accuracy and ease of management.
- Actualitzacions de firmware: If you experience limitations with voice assistants (e.g., only a few channels recognized), check for and apply any available firmware updates through the Tuya Smart app.
- External Switch Flexibility: The external switch inputs are dry contacts, allowing for versatile wiring configurations, including linking multiple switches in parallel to control a single channel or group from various points.
11. Garantia i Suport
For warranty information, technical support, or service inquiries, please refer to the seller's contact information or visit the official SMTONOFF weblloc web. Conserveu el rebut de compra com a comprovant de compra.





