Specification
Ultra-Sensitive Battery Powered
Carbon Monoxide Monitor
Model KN-COU-B
Architectural and Engineering 
Specifications
The carbon monoxide monitor shall be Kidde Model KN-COU-B 
or approved equal. It shall be powered by three (3) AA batteries 
(included). The temperature operating range shall be between 
40ºF (4ºC) and 100ºF (37.8ºC) and the humidity operating range 
shall be 10% - 95% relative humidity. 
The monitor can be installed on the surface of any wall or table 
top following the UL/Manufacturer’s recommended placement 
guidelines. The alarm shall include a battery lockout system 
that deters closure of the battery door without batteries being 
installed. 
The unit shall incorporate 2 LEDs. A green LED will flash once 
every 30 seconds to indicate normal operation, or flash 4 times 
every 10 seconds to signal low levels of CO. The red LED will 
pulse to indicate higher levels of CO have been detected. 
The monitor shall include a piezoelectric horn that is rated at 85 
decibels at 10 feet. When low or mid level concentrations of CO 
have been detected, the monitor will beep two times every 10 
seconds. When high levels of CO are detected the monitor will 
beep four times every five seconds. 
The monitor shall include a test button that will electronically 
simulate the presence of CO and cause the unit to go into alarm. 
This sequence tests the unit’s electronics to ensure proper opera-
tion. The monitor will initiate LED and/or audible notification in 
the following time range when exposed to the corresponding 
levels of CO.
P/N: UltraSen-KN-COU-B sheet  rev. 04-2013
2.75”
4.5” 1.5”
Ordering Information
Part Number UPC Pack Quantity Dimensions I 2 of 5 Weight Items/Skid
21009942 0-47871-09942-9 Master Pack (6 units) 6” x 12” x 3.25 100-47871-09942-6 6 lb 1296
Low Level Mid Level CO Alarm
20 ppm 20-115 minutes >115 minutes n/a
70 ppm 0-20 minutes 20-60 minutes 60-240 minutes
150 ppm 0-7.5 minutes 7.5-21 minutes 10-50 minutes
400 ppm 0-4 minutes 3-8 minutes 4-15 minutes
Alarm 
Pattern
4 green flashes 
10 seconds off
4 green, 2 red 
flashes & 2 chirps 
every 10 seconds
4 red flashes 
and 4 chirps 
every 5 seconds.
The unit shall include a 10-year manufacturer’s limited warranty.
Technical  
Specifications
Model: KN-COU-B
Power Source:  3-AA Batteries
Sensor: Electrochemical
Audio Alarm:  85dB at 10ft
Temperature Range:  40˚F (4.4˚C) to 100˚F (37.8˚C)
Humidity Range:  10%-95% non-condensing  
  relative humidity (RH)
Size:  4.5”L x 2.75”H x 1.5”D
Weight:  .5 lb.
Interconnects: No
Warranty:  10 year limited
1016 Corporate Park Drive
Mebane NC 27302
1-800-880-6788
www.Kidde.com
Distributed by:


