MQTT protocol

wireless interconnected smoke alarm direct from Wanlin Fire Protection — 12-year factory experience, WL-SFP400 smart fire detector certified CE/EN14604/EN54/UL217/UL268/FCC. Key specs: Addressable Manual Call Point + Sounder Strobe + 4G LTE Cat.1 + Addressable Loop + LED Indicator, Addressable Loop + 4G LTE Cat.1 Backup + Cloud Platform + SMS/Push/Email + Re···

MQTT Protocol Pressure Transmission direct from Wanlin Fire Protection — 12-year factory experience, WL-PG400 fully certified CE/FCC/RoHS. Key specs: 4G Cat.4 wireless, 5s alert push via APP/SMS/Call/Email, 3-year