Specifications:

• Certification: CE
• Origin: CN(Origin)
• Working voltage: DC 5V (micro USB) DC 12V(through external terminal)
• Type: Smoke Detector
• Static current: Less than 20mA
• Operating temperature: 0°C to 50°C
• Model Number: FD438G
• Low voltage alert: 3.9V±0.3V
• Humidity range: Less than 95%RH (no freezing)
• GSM bands: 850/900/1800/1900MHZ
• Brand Name: FD
• Battery: 3*1.5V AA battery
• Alarm sound: More than 80db
• Alarm current: Less than 350mA