12V Propane and Carbon Monoxide Alarm Safe-T-Alert 35-742 Mounts Flush with Wall Safe-T-Alert 35-442-P, a 12 Volt brown hard-wired recessed flush mount dual carbon monoxide monitor and propane gas alarm for recreational vehicles. Made in USA by MTI Industries. Listed to UL R 2034 RV/Unconditioned Area CO Alarm and UL R 1484 RV Gas Detectors. Test/Reset Button mutes alarm during ventilation. Approved. Meets RVIA/NFPA requirements. Meets 5/1/2011 requirements set by RVIA for CO alarms and Propane Detectors. Tests both alarm functions with one touch. Both alarms are fully operational during mute cycle and will re-alarm if hazardous conditions recur. Both sensors continue to work during an alarm. Case size is 6.375 Inches wide by 2.875 inches high and 1.25 inches deep. Fits Safe-T-Alert Model 30-442 Cut Out 5 3/8 x 1 7/8 inches. NOTICE Not for Police Vehicle Use MTI CO Alarms are listed to UL 2034 Residential / RV / Marine Use. They are not tested to the OHSA standard for work environments. MTI does not recommend use of our product in police vehicles as a monitor for a perceived/potential vehicle defect. Warranty The Date Stamped on each Detector is the Date of Manufacture. Each unit has a 10 year shelf life. The Limited Warranty is 1 year and begins from the date of resale. Units have a 5 year life. Replace units after 5 years. Contact MTI directly for warranty related questions. Fits Safe-T-Alert Model 30-442 Cut Out and CCI LP Gas Alarm Cut Out for Flush Mount Models. Can be used to replace these CCI units CC-7770.230, CC-7770.231, CC-7770.233, CC-7770.234 ,CC-7770.250,CC-7770.251, CC-7770.253, CC-7770.254, CC-7770.281, CC-7770.284, CC-7771.231, CC-7773.081,CC-7773.151, CC-7773-231 and CC-7773.25. In other words, when installed, this unit does not protrude from the wall the sensor part of the unit fits inside the hole. Note Some CCI units in Fleetwood or Winnebago RV's have two power leads. This dual carbon monoxide alarm and propane gas monitor un This item ships from a separate warehouse and may require extra time for delivery.