Description
The SONOFF SV is a versatile low-voltage Wi-Fi smart switch designed for DIY smart control applications. Unlike standard mains-powered smart switches, the SONOFF SV operates on 5–24V DC, making it ideal for controlling garage doors, gates, access control systems, solenoids, relays, and other low-voltage devices.
It supports both self-locking and inching (momentary) modes, allowing precise control for automation projects. With the eWeLink app, you can remotely trigger devices, set timers, and integrate the switch into smart scenes. Its compact size and dry-contact relay output make it especially popular for custom electronics and automation setups.
Key Features
- Low-Voltage Operation: Powered by 5–24V DC for safe and flexible installations.
- Dry Contact Relay: Isolated output suitable for garage doors, gates, and control circuits.
- Inching / Self-Locking Modes: Supports momentary pulse or standard on/off switching.
- Wi-Fi Control: Remote operation via the eWeLink app from anywhere.
- DIY-Friendly Design: Ideal for custom automation and electronics projects.
- Smart Automation: Supports timers, schedules, and app-based control.
- Compact Form Factor: Easy to install inside control boxes or enclosures.
Specifications
- Model: SONOFF SV
- Power Supply: 5–24V DC
- Relay Output: Dry contact (NO/NC/COM)
- Max Load: 10A (resistive, relay rating)
- Connectivity: Wi-Fi 2.4GHz
- Control Mode: Self-locking / Inching
- App Support: eWeLink
- Smart Functions: Timers, schedules, remote control
- Installation: DIY / Control box mounting
- Housing: Flame-retardant plastic



