Safe-T-Alert by MTI Industries Dual LP/CO Alarm | 12V Surface Mount, Black

This Safe-T-Alert alarm combines propane gas and carbon monoxide detection in one hardwired 12V unit, so it upgrades a single-gas alarm without adding extra wiring.

• Detects propane gas leaks and carbon monoxide in one unit
• 12V DC hardwired power with a low-voltage warning
• Alarm mute button for safe ventilation; automatically re-arms if gas levels stay high
• Rated for -40°F to +158°F operation
• Surface mount design, black housing

It's built for continuous use in RVs, travel trailers, fifth wheels, and motorhomes.