Why Does Sonoff Device Keep Going Offline at Night?
- Router scheduled tasks
- ISP modem reset window
- Channel auto-hop instability
Problem Description
When a SONOFF Sonoff Nighttime Dropouts drops offline, it's almost always a stale network session rather than hardware failure — the steps below fix the majority of cases in under five minutes.
Symptoms
- Nighttime offline pattern
- Morning recovery
- Multiple devices affected
Recognize these? Here's what usually causes it.
Common Causes
- Router scheduled tasks
- ISP modem reset window
- Channel auto-hop instability
Most fixes happen in the first 3 steps.
Do not factory reset all devices before checking router schedules.
Tools & Requirements
Step-by-Step Solution
Correlate timestamps
Match dropout windows with router/ISP maintenance schedules.
Stabilize RF settings
Avoid aggressive nightly channel changes on 2.4GHz.
Validate lease behavior
Check DHCP renewals and session stability for IoT clients.
Quick Solutions
Still having issues? This is usually the deeper cause below.
This usually happens right after a router reboot or ISP change — the device rejoins the network but drops its cloud session silently.
Nighttime pattern usually indicates infrastructure policy, not random device failure.
Most WiFi drop-offs happen right after a router reboot or ISP swap — the device reconnects to the network but silently loses its cloud registration.
- Router scheduled tasks
- ISP modem reset window
- Channel auto-hop instability
Before you go — try one of these (they fix most cases).
Need More Help? SONOFF Support
Note: The contact information below connects you directly to SONOFF's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.
