Alarm System for Home Hotel Warehouse Factory Security [Temperature & Flashing Alarm,High Sensitivity] Wireless Smoke Fire Detector Carbon Monoxide Gas Detector Alarm Sensor Work with Amazon Alexa

Specification : Size: 85 x 50mm(Diameter x Height) Operating current: Monitoring current: 25uA Alarm current: 45mA Operating voltage: DC9V (1x CR123A battery) Buzzer level: 85dB (3metre) Operating temperature: -10 C to 60 C Working humidity: 95% RH Warning density: Carbon monoxide 30ppm, 120 minutes without alarm; 50ppm, in 60-90 minutes alarm 100ppm, 10-40 minutes alarm; 300ppm, 3 minutes alarm; Smoke: 1% ~ 5%/FT OBS Standard: CE & EN14604 and RoHS Package includeds : 1 x Alarm 2 x Fixing screws 1 x Battery Details pictures :