Sonoff 4CH Pro & 4CH Pro R2 are 4 gang WiFi switches. They support switching among 3 working modes: interlock/self-locking/inching mode, and both supports to set 1-16s delay in inching mode. This feature allows you to let your switch turn on for a few seconds then goes off, which works like a pulse switch. They integrate with a 433.92MHz RF receiver module, making them possible to be controlled by RF Remote. The smart switches are DIN Rail mounted. Users can remotely turn on/off the connected lights/appliances by iOS/Android App eWeLink or 433MHz RF Remote. They can create 8 enabled single/repeat/countdown timers to automatically turn on/off at the specified time. The timers can run themselves even when the network is unavailable. To let the devices be controlled by others, users can simply share the devices to other accounts and allow specified timers permissions. Users can even create some scenes or smart scenes to trigger ON/OFF the switch.
[Independently control 4 devices] : It is the new 4-channel design which can make you remotely turn on/off 4 home appliances independently.
[3 powerful working modes] : Turn on/off the 4 connected devices separately in self-locking mode. Turn on 1 device but turn off other 3 devices at the same time in interlock mode. Turn on the connected devices but automatically switch off after 0.5-3600s later in inching mode.
[Quick to Access 3 Working Modes] : Compared with 4CHPROR2, you can access self-locking, interlock and inching mode on APP directly.
[Easy to Out-of-Reach Devices]: Mounted on the guide rail, convenient to connect and control devices far from the switch
[Works with Alexa & Google Home,IFTTT Supporting]: Link “EWeLink Smart Home Fan” skill. You can directly ask Amazon Echo/Echo Dot/Amazon Tap to turn on/off your Sonoff devices.Link “Smart We Link” on Google Home app, start to voice control your Sonoff devices on Google Home.(Only eWeLink advanced users have access to IFTTT, Costs 9.9USD and you will enjoy a full year of the privilege.)