General description The Wifi Carbon Monoxide Detector and Wifi Smoke Detector is a smart security alarm system designed to provide real-time alerts through the TuyaSmart or Smart Life APP. It features an electrochemical sensor and a high-strength semiconductor sensor, ensuring high sensitivity and minimal false alarms. The device connects to your home Wifi and sends immediate notifications to your mobile device in case of an alarm, regardless of your location. Technical specifications Working voltage: 110 ~ 230VAC 50Hz Average consumption: 1.5W Alarm sound: 85dB/m Alarm output: relay output (NC), compatible with 12V solenoid valve Wi-Fi: 2.4G - 802.11 a/b/g/n Alarm concentration: 30ppm (120 minutes), 50ppm (60-90 minutes), 100ppm (10-40 minutes), 300ppm (3 minutes) Working temperature: -10~50°C Working humidity: 10%~95%RH Package size: Approx. 15 x 11 x 5.5cm / 5.9 x 4.3 x 2.2in Package weight: Approx. 250g / 8.8oz Compatibility and accessories Compatible with TuyaSmart or Smart Life