Video peephole T203 WiFi-enabled security cameras have become a popular solution for enhancing apartment and home security thanks to the ability to remotely view video from the door. However, many users face the challenge of setting up the device so that multiple people can connect to it simultaneously. two smartphones — for example, the phone numbers of a husband and wife or the landlord and tenant. Standard instructions often overlook this detail, leading to confusion and setup errors.
In this article we will look at three official methods connections T203 We'll also explain how to connect to two devices (including a cloud-based method that works even if you change your router), and how to bypass typical firmware limitations. We'll pay special attention to setting access rights to avoid conflicts between users, and we'll also discuss why the second device sometimes doesn't see the peephole, even though the first one connects without issue.
If you have already tried to set up sharing and received an error like Device is offline or Account already bound — there is in the article A unique solution for resetting the binding without physical access to the Reset button on the device.We also tested the peephole with different router models and identified which network settings could block the connection of a second smartphone.
1. Preparing the video peephole T203 to setup
Before you start connecting the second smartphone, make sure that the peephole T203 Works correctly with the first device. This is a basic requirement: if the primary connection is unstable, sharing will fail.
Please check the following points:
- 🔌 The peephole is connected to the power supply and the indicator on the panel is lit. green (blue or red color indicates an error).
- 📶 The device is within range of the WiFi router (the signal should not be weaker
-70 dBm; you can check it in the app WiFi Analyzer). - 📱 The first smartphone has the official app installed for T203 (usually it is Tuya Smart or Smart Life, depending on the firmware version).
- 🔄 The peephole firmware has been updated to the latest version (check in the section
Device Info(in the appendix).
If the peephole was previously linked to another account (for example, the seller has already set it up for testing), perform factory resetTo do this:
- Turn off the power to the peephole.
- Press and hold the button
Reset(usually located on the side or back panel). - Without releasing the button, connect the power supply and hold it 10-15 seconds, until the indicator flashes red.
⚠️ Note: After resetting, all previous settings, including account linking, will be deleted. If the peephole is installed on the door, temporarily remove it for easier setup.
2. Method 1: Sharing via one app (Family method)
The easiest way to connect a second smartphone is to use the function sharing (or "Family") in the official app. This method doesn't require any changes to your router settings and works even if both phones are on different networks.
Instructions for the application Tuya Smart (similarly for Smart Life):
- Open the app on first smartphone (the one that is already connected to the peephole).
- Go to the section
Devices→ select yours T203. - Click on the icon
⋯(three dots) →Device management→Sharing. - Enter your email or phone number second user (it must be registered in the same application).
- Select access level:
- 🔓 Full access - control of all functions (recommended for family members).
- 👁️ View only — the ability to watch videos, but without the right to change settings (suitable for renters).
After confirmation, the second smartphone will have access to the peephole. Both devices will be able to simultaneously View videos, receive motion alerts, and manage settings (if allowed).
⚠️ Attention: In some firmware versions T203 the sharing function may be limited three usersIf the invitation is not sent, check the limits in the section Device Sharing.
Make sure the second user is registered in the same application (Tuya/Smart Life)
Check that the peephole has internet access enabled (the WiFi indicator is green)
Disable VPN on both smartphones (may block invitations)
Update the app to the latest version-->
3. Method 2: Connecting via different accounts (for advanced users)
If the sharing feature is not available (for example, in older firmware versions) or you need to connect the peephole to accounts in different applications (for example, one phone uses Tuya Smart, and the second one is Smart Life), you can use the method rebinding the deviceThis method takes more time, but provides flexibility in settings.
Algorithm of actions:
- On first smartphone Unlink the eye from the account:
- In the app, go to
Devices→ select T203 →⋯→Remove device. - Confirm deletion (the peephole will be reset to factory settings).
- In the app, go to
- In the app, click
Add a device→Door peephole. - Follow the instructions to connect to WiFi (make sure the network is
2.4 GHz, because T203 does not support5 GHz). - After successfully connecting to the second phone, repeat the process for the first one, but at the linking stage use another account (register a new email in the app).
- Make sure the peephole is connected to the first smartphone and works stably.
- In the appendix (Tuya Smart or Smart Life) go to device settings →
Cloud Service(Cloud service). - Activate cloud linking (you may need confirmation via SMS or email).
- Copy Device ID (usually displayed as a QR code or alphanumeric code).
- On second smartphone:
- Open the same application and log in as the same account, as on the first phone.
- Go to
Add a device→Other methods→Link via ID. - Enter the copied ID and confirm the linking.
This way, the peephole will be linked to two different accounts. The downside of this method: if you change your WiFi router, you'll have to repeat the setup on both phones. Notification delays are also possible if two users attempt to control the device simultaneously.
| Connection method | Pros | Cons | Suitable for |
|---|---|---|---|
| Sharing (Family) | Fast, no reset required | Limit on the number of users | Family members, tenants |
| Relinking to different accounts | Works with various applications | More difficult to set up, possible conflicts | Advanced users |
| Cloud service (see Method 3) | Stable operation, no connection to the router | Requires cloud registration | For remote access |
4. Method 3: Connecting via a cloud service (the most reliable method)
If you need a peephole T203 was accessible from two smartphones regardless of home WiFi (for example, to watch videos from anywhere in the world), the optimal solution is to use cloud bindingThis method requires registering the device with the manufacturer's cloud service, but it eliminates local network issues.
Step-by-step instructions:
The advantage of this method is that both smartphones will receive notifications and videos. via the Internet, even if your home WiFi router goes down. However, keep in mind that for the cloud service to work reliably, the peephole must be constantly connected to power and the internet.
⚠️ Note: In some regions, cloud services Tuya may be blocked by ISPs. If the video doesn't load after linking, try using a VPN on your smartphone (for example, ProtonVPN with servers in Europe).
What to do if the cloud does not connect?
If after activating the cloud service the peephole displays an error Cloud connection failed, check:
1. Date and time on your smartphone - they must match the real ones (set up automatic updates).
2. Account region In the app, some cloud features only work for certain countries (for example, the US or China).
3. Router firewall - temporarily disable it or add the device to the exceptions (ports TCP 8883 And UDP 32100).
5. Common mistakes and their solutions
When setting up sharing T203 Users often encounter the same problems. We've compiled the most common errors and how to fix them.
Error 1: "Device is offline" on the second smartphone
If the first device sees the peephole, and the second one shows it offline:
- 🔄 Restart the peephole (turn the power off/on).
- 📡 Check that both smartphones are connected to one WiFi network (if using a local connection).
- 🛠️ Disable this feature in your router settings
AP Isolation(client isolation), as it blocks communication between devices on the local network.
Error 2: "Account already bound" when trying to link
This error means the peephole is already linked to another account. Solutions:
- 🔄 Reset the peephole to factory settings (button
Reset). - 📧 If resetting doesn't help, please contact support Tuya (
support@tuya.com) and request to unlock the device using the serial number. - A unique solution without resetting: in the app on the first smartphone, go to
Devices→⋯→Transferring a deviceand select the second account to link.
Error 3: Video lags or doesn't load on the second phone
Video streaming issues are usually related to:
- 📶 Weak WiFi signal - check the signal level where the peephole is installed (it should be no lower than
-70 dBm). - 🖥️ Router overload - turn off other devices that consume traffic (torrents, online games).
- ⚙️ Incorrect video quality settings in the application - install
Balancedinstead ofHigh Definition (HD).
6. Optimization of the peephole for two users
To avoid conflicts when used simultaneously T203 from two smartphones, configure the following settings:
Notification settings
By default, both phones will receive duplicate motion notifications. To avoid this:
- In the application on first smartphone go to
Device Settings→Notifications. - Disable the option
Duplicate notifications(orPush to all devices). - Set up notification schedules so that they arrive only at the times you want (for example, from 8:00 AM to 10:00 PM).
Differentiation of access rights
If the second user (eg a tenant) should not have full control over the peephole:
- 🔒 In the sharing settings, select the mode
View only. - 🚫 Disable the ability to change video settings (resolution, motion sensor sensitivity).
- 📅 Limit access times (e.g. daytime only).
Saving traffic and battery
Continuously streaming video from two devices can overload your network and drain your smartphone's battery. Optimize your experience:
- 📉 Set the peephole mode in the settings
Saving traffic(if any). - ⏱️ Set your video to automatically turn off after 30 seconds of inactivity.
- 🔋 On smartphones, disable background activity for the app (in Android/iOS settings).
7. Compatibility with different router models
Video peephole T203 May conflict with some routers due to firmware or security settings. We tested the device with popular models and identified common issues.
| Router model | Problem | Solution |
|---|---|---|
| TP-Link Archer C6 | The peephole doesn't connect to WiFi. | Disable WPA3 in the security settings, leave only WPA2-PSK |
| Xiaomi Mi Router 4 | The video lags when viewed from two devices. | Turn on Qos and set the priority for the MAC address of the peephole |
| Keenetic Lite III | Error Invalid password when connecting |
Set the WiFi channel manually 6 or 11 (automatic selection may conflict) |
| ASUS RT-AC66U | The peephole switches off periodically | Disable Roaming Assistant And Airtime Fairness |
If your router is not on the list, but the peephole T203 works unstably:
- 🔧 Disable it in your router settings
Band Steering(if any) - This feature can force devices to switch to5 GHz. - 🔄 Set a fixed channel
2.4 GHz(For example,1, 6 or 11) instead of automatic selection. - 🛡️ Add the MAC address of the peephole to
Whitelist(if MAC filtering is used).
⚠️ Note: Router settings may vary depending on the firmware version. If you can't find these parameters, check the documentation for your model or update your router's firmware.
FAQ: Frequently asked questions about setup T203 for two smartphones
Is it possible to connect the peephole to Android and iOS phones simultaneously?
Yes, T203 Supports cross-platform operation. The main thing is that the same application is installed on both devices (Tuya Smart or Smart Life) and one account was used (or shared access was configured).
Why is there no sound from the peephole on the second phone, although there is video?
The issue may be related to app settings or access rights restrictions. Check:
- The option is enabled in the peephole settings
Audio(sometimes it is disabled by default for sharing). - On the second smartphone, access to the microphone is allowed in the application settings.
- The peephole firmware has been updated (in older versions, sound was transmitted only to the main user).
How do I unlink a second smartphone if I no longer need it?
To remove access for a second device:
- On the first smartphone, open the app and go to
Device management→Sharing. - Find the second user's email/phone number and click
Delete. - Confirm the action. Access will be revoked immediately after synchronization with the server.
If the peephole is linked through different accounts, reset it and set it up again for one device.
Is it possible to connect the peephole to three or more smartphones?
Technically yes, but with limitations:
- Through shared access Usually you can add up to 5 users (depending on firmware).
- At cloud binding The limit is determined by the cloud service tariff (the free plan may limit the number of devices).
- At relinking to different accounts the quantity is not limited, but the risk of conflicts increases.
The optimal solution for a large family is to use one account with shared access for everyone.
The peephole is connected to two phones, but notifications only arrive on one. Why?
This is standard behavior for most smart devices. TuyaTo duplicate notifications:
- In the peephole settings, enable the option
Push to all shared users(if any). - Check the notification settings in the app on the second smartphone (section
Notifications). - Update the peephole firmware - this problem has been fixed in new versions.
If this option is unavailable, use a cloud service—it usually sends notifications to all linked devices.