This is a Propane/LP Alarm not a Carbon Monoxide Alarm

Propane Leak Detector; Safe-T-Alert ™; Flush Mount; Alerts To Leak With Beeping; 6-3/8 Inch Length x 2-7/8 Inch Height x 1 Inch Width; With Auto Reset; 12 Volt DC Hardwire; Black
  • Used To: Class A Motor homes, Class B Van Campers, Class C Mini-Motor Homes, Travel Trailers, Fifth Wheels
  • Type: Electronic
  • Alert Type: Alerts To Leak With Beeping
  • Unit Size: Not Applicable
  • Housing Color: Black
  • Length: 6-3/8 Inch
  • Width: 1 Inch
  • Advanced Technology Alarm Mute Button Silences Alarm While RV Is Ventilated
  • Reliable 12 Volt Power Means No Missing Or Dead Batteries To Replace
  • Durable: Built For The Extreme RV Environment
  • Meets RVIA And NFPA Requirements
  • Listed To UL 1484 RV
  • Long Life, Self Cleaning Sensor, Maintenance Free Built-In Sensor
  • Designed For The Rugged RV Environment
  • Limited 1 Year Warranty
IMPORTANT: This unit must be replaced within five years of its installation date.  This unit has an End of Life (EOL)  signal that will sound after 5 years of use. Record the installation date in the section, Owner’s Replacement  Record , in this manual for future use.  The replacement date indicates the date beyond which the device may no longer detect carbon monoxide,  The device should be replaced.