Safe-T-Alert 45-Series Combo Carbon Monoxide Propane Alarm Surface Mount - Black Engine Mounts The primary design features include

The primary design features include the redirection of the sound signature

Set screws can be purchased separately (299999-1)

Perfect for extreme environments

Features:4" diameter self-healing polymer target

Frequency range: 20Hz-20KHz

Safe-T-Alert 45-Series Combo Carbon Monoxide Propane Alarm Surface Mount - Black Engine Mounts The primary design features include45 Series Combo Carbon Monoxide Propane Alarm Surface Mount Black Have a safe TRIP! Test and inspect the Propane and CO alarms installed in your RV every week and replace malfunctioning alarms. Replace all Propane and CO alarms that are 5 years old or older. Install alarms listed for RV use. Prevent accidents by teaching family and friends about the operation of the alarms. Never ignore a sounding alarm. Features: Double duty alarm Detects both gas