Smart relay Sonoff Basic (R4) Wi-Fi, Bluetooth

Sonoff Basic R4 is a smart switch relay is the new version of Sonoff Basic R2, the entry-level member of Sonoff's internet controllable relay switches. As a new feature, it is also compatible with Sonoff eWeLink-Remote (Sonoff S-MATE / S-MATE2 modules, R5 wireless switch).
It is a relay switch module with WiFi + Bluetooth support, which requires a 230V AC power supply and can be used to turn on/off electrical appliances. Using an app running on an internet-connected iOS (Apple) or Android mobile phone, you can control the switch remotely and set a scheduled on/off.
Of course, there is also a physical button switch on the relay. And the remote access option through the mobile app can be shared with family members. Perfect for intelligently controlling household electrical devices that don't need to be on all the time, but need to be turned on/off intermittently (eg circulator or aquarium aerator). It can be used to turn on home appliances remotely before you get home, and it can also be used to relax conveniently to save energy and money.
Sonoff Basic R4 does not have an external thermometer/humidity sensor input, no wired sensor can be connected.
If you also need temperature range or humidity level control, choose the Sonoff TH relay series.
Product features:
Mobile app - Free mobile app for iOS and Android: eWeLink
Status check - The mobile app shows the current status of the relay (on or off)
eWeLink-Remote compatible (Bluetooth) - has a Bluetooth receiver and a hub function, so the S-MATE modules / S-MATE R3 and R5 wireless switch were used as local remote control
Remote on/off - wherever you are, you can remotely turn on or off the relay (and devices connected to it) from the mobile app via web
Timing - Multiple timing functions are available: set specific time, set recurring times, timer/countdown timer, cycle.
Timed switch off - you can also set the socket to switch off automatically at a certain time after each switch on
Pulse switching: the relay can also be set to pulse switch ie to switch for a short period of time (e.g. , typically 0.5 or 1 second)
Can be shared with others - Give remote control access, e.g. family members or others
Groups, rooms - organize your Sonoff and SmartWise smart devices into groups and rooms in the eWeLink
SmartControl app (Scenes) - The eWeLink SmartControl / Scene app feature also allows you to create conditional controls between different Sonoff devices / SmartWise. For example, you can switch a Sonoff S26 outlet based on temperature or humidity sensor data from a TH10 relay, or switch a Sonoff or SmartWise smart light switch based on the RF motion sensor signal from a Sonoff RF Bridge gateway, or coordinate turning on/off two WiFi devices (for example, a Sonoff light switch can switch a Sonoff WiFi smart connector via WiFi).
Compatibility - Can be connected to Amazon Alexa, Google Assistant and Google Nest for voice control
Sonoff and sister brand SmartWise devices are compatible with each other, both using the eWeLink factory app.