Focus™ Wireless SmokeDetector – MD-2105R

Wireless Smoke Sensor

• built-in buzzer
• Battery lifetime about one year
• Self-test indication: red LED turn on then voice prompt self-test successfully.
• Alarm output indication: red LED turn on 5 seconds then buzzer sound
• Battery low voltage indication
• Working frequency: 433MHz
• Working environment indoor use: -5 to +50℃; humidity 10%-90%