Wifi Battery, Smoke Detector, Fire Protection, Alarm Sensor For Home Security

Specifications:

Battery: 2pcs 123A battery 2600ma up to 5 years (No triggered)
Standby current: <25uA
Led: green led flashes every 45 seconds when standby; red led flashes when alarm;
Smoke detection sensitivity: 0.0002%m/obs
Smoke detection range: 0.0002%m/obs -800.0000%m/ obs
Working temperature: -5°C -50°C; Humidity: <90%RH
Size: 83*83*52mm
Horn level: 85db 3m
Alarm sound duration: 30 seconds

WARRANTY

We'll refund your money if the item hasn't been delivered within 40 days after purchase. You have 2 weeks to request a refund — until day 60.
Product doesn't match the description? Contact us within 30 days after you receive it!
In case of cancellation, money will be refunded to your account within 3 days.