4-Channel Switchboard Main Station – UL Listed – StageStore.ca
Rgblink Mini Pro Video Switcher 4 Channel Support Pc App Control Hdmi Switchboard With T-bar For Live Streaming Broadcast - Photo Studio Kits - AliExpress
Sonoff 4CH PRO R3 - 4-channel switch with WiFi and RF - Kamami on-line store
4-Channel Remote Control Switch - JAGElectronics Enterprise