co gas alarm with LCD diaplay

1.NEMOTO/FIGARO/SIXTH SENSE CO sensor
2.9V battery operated,
3.LCD display(20--999ppm)
4.low voltage signal
5.sound>85DB

Co alarm 

NEMOTO / FIGARO / SIXTH SENSE CO sensor

 

Power Supply: DC 9V battery operated

Sensitivity Setting: conforms to EN50291

Standby Current: <30μA

Alarm Current: <30mA

Operation Ambient Condition: 4~38, 25~85%RH

Sensor Type: electrochemical

Sensor life: >6 Years

Display range: 20-999PPM

Hush function

Low battery voltage alarm

Recommended battery: Gold peak 1604A, Gold power G6F22

Alarm sound: ≥85DB at 100cm at 3.4±0.5KHz pulsing alarm (The alarm

pattern is 4 short beeps-followed by 5 seconds of silence-followed by 4

short beeps with a corresponding LED flash ,repeat this alarm pattern)