Why Do My Tuya Smart Life Devices Go Offline Every Night at the Same Time

Problem Description

Your Tuya Smart Life devices consistently go offline at the same time every night. They reconnect in the morning or after manual intervention. This pattern suggests a scheduled network event rather than random connectivity issues. Automations fail during these offline periods and you cannot control devices remotely.

Symptoms

• All Tuya devices go offline at exactly same time nightly
• Devices reconnect in morning automatically
• Issue happens even with strong WiFi signal
• Only Tuya devices affected, other devices fine
• Offline time correlates with router maintenance window
• App shows all devices unavailable simultaneously

Recognize these? Here's what usually causes it.

Common Causes

• Router scheduled reboot or maintenance window
• ISP performing nightly network maintenance
• Router power saving mode disconnecting idle devices
• Tuya cloud server regional maintenance
• DHCP lease expiring at configured time
• Automatic firmware updates rebooting devices

Step-by-Step Solution

1

Check Router Scheduled Reboot

Many routers have an option to automatically reboot at a set time for stability. Log into your router admin panel and search for Scheduled Reboot, Auto Restart, or Maintenance settings. If a reboot is scheduled around when your devices go offline, disable it or change the time to when you are awake.

2

Disable Router Power Saving

Some routers disconnect idle WiFi clients to save power. Tuya devices that are not actively transmitting may be seen as idle. Look for settings like Green Mode, Eco Mode, Power Saving, or Idle Timeout. Disable these or set the timeout to maximum. Your Tuya devices may appear idle but are listening for commands.

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3

Extend DHCP Lease Time

If your router DHCP lease is set to expire at the same time each night, devices must renew their IP addresses. Some devices handle this poorly and disconnect. In router settings, find DHCP Lease Time and increase it from the default (often 24 hours) to 7 days or longer.

4

Set Static DHCP Reservations

For each Tuya device, create a DHCP reservation in your router. Find the device MAC address in the Smart Life app device info. In router settings, add a reservation mapping that MAC to a fixed IP. This prevents IP renewal issues and ensures consistent connectivity.

5

Check ISP Maintenance Schedule

Some ISPs perform nightly maintenance that briefly disconnects customers. This is more common with cable and DSL. Contact your ISP and ask if they have scheduled maintenance windows. If so, there may be no fix other than waiting it out or switching providers.

Quick Solutions

Still having issues? This is usually the deeper cause below.

Need More Help? Tuya Smart Life Support

Note: The contact information below connects you directly to Tuya Smart Life's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.