The A771 is a CO adapter designed to work with your DMM to measure ambient air CO. Can also be used as a personal CO alarm.

• Ambient CO safety checks
• Built-in alarm is preset to 30ppm. Setting can be set by user.
• Use with any DMM with minimum 2 1/2 digit LCD, 2 or 4Volt DC range and 10M Ohm or greater input impedance.
• Detect CO levels from 0-1999 ppm, with resolution as low as 0.1 ppm and ±5% of reading accuracy.
• Soft pouch included

Specifications:

• Carbon Monoxide (CO) Measurement       Range 0 - 1999ppm, Accuracy  ±5ppm or 5% of reading whichever is greater, Resolution  1ppm
• Output     1mVDC / 1ppm CO into 10M Ohm impedance
• IR Printer Port     No
• Flue Probe     No
• Internal Pump     No
• Combustible Gas Leak Detection     No
• Backlight     N/A
• Alarm     Audible
• Power Supply     9V Alkaline Battery
• Dimensions     6.5” x 2.1” x 1.2”
• (165 x 55 x 30 mm)
• >Weight     7.23oz (205g)
• Warranty     3-year limited warranty, 2-year sensor warranty