Brand new digital smoke and had detector
BRAND NEW LIFE SAVING SMOME AND GAS DETECTOR FOR SALE House Safety New Smoke Poisoning Gas Sensor Detector LCD Warning Alarm Tester Power supply: 3 AA batteries Alarm concentration: 50PPM. 60~90 minutes: 100PPM. 10 40 minutes: 300PPM. 3 minutes Low battery alarm: "chirp" - - sound every 30 seconds, LED display: Lb Static indication: Green LED blinks every 30 seconds - - times Product size: diameter 100mm*38mm Rated voltage: 220V 50HZ , Alarm sound: 85DB (3 meters) Working range: Humidity 4C~38