Sonoff 4Ch ProR3 Wi-Fi and RF Switch (220V and 12-24 V) - ISP Home
SONOFF 4CH R3 -230V 10A 2200W 4 Gang WiFi DIY Smart Switch Inching/Self-Locking/Interlock 3 Working Mode APP Remote Control Switch Works with Alexa and Google Home – Sonoff India
SONOFF 4CH Pro R3 Wi-Fi Smart Switch 4-Channel Din Rail Mounting Home Automation,Self-Locking/Interlock Control Home Appliances, RF/APP/Voice/LAN Control, Compatible with Alexa(2 Pack) - Amazon.com
SONOFF 4CH PRO R3 RF制御付き4ギャングWi-Fiスマートスイッチ
Flashing Tasmota on 4CH R3 & 4CHPRO R3 - NotEnoughTech