SONOFF SV is a low voltage switch. The low voltage light switch supports 5-24V power supply. Power supply separation enables it to control both AC and DC power, although some welding is required for this purpose. It has GIPO reserved to support secondary development. This product does not have 433 RF function and shell.

SONOFF SV low voltage WiFi switch is an affordable device that provides customers with smart home control. The low voltage WiFi switch is a WiFi based wireless switch that can connect to a wide range of appliances. Sonoff SV low voltage remote switch transmits data to a cloud platform through the WiFi router, which enables customers to remotely control all the connected appliances, via the mobile application eWeLink. The cloud server of Sonoff SV is Amazon AWS global server.

SONOFF SV low voltage wireless remote switch makes all home appliances smart. As long as the mobile has network, customers can remotely control the appliances by turning them on off from anywhere at any time. Another feature available is to set timing schedules for the appliances, which can include countdown, scheduled on/off, and can thus, help customers maintain an easy life.

The mobile application eWeLink enables customers to control the appliances easily. The iOS version of the application can be downloaded in App Store while the Android version in Google Play.

ESP8266 Datasheet

Features
Remote control the connected device on app from anywhere
Tracking real-time device status on app
Supports max 8 enabled schedule/countdown timers
Reserves GIPO to support secondary development
Works with Amazon Echo, Echo Dot, Amazon Tap
Works with Google Home, Google Home Mini, Google Nest

Works with IFTTT
Specifications
Power supply: 5~24V
Weight: 15g