X-Sense Smoke and Carbon Monoxide Alarm Combo XP0H-SN 1-Pack — 10-Year Sealed Battery, LCD

The X-Sense XP0H-SN is a combined smoke and carbon monoxide alarm with a 10-year sealed battery and an LCD that displays CO levels for continuous home monitoring.

Compact and designed for straightforward installation, the XP0H-SN delivers dual sensing in a single unit that meets UL 217 and UL 2034 standards. It’s a standalone alarm without wireless interconnect or Wi‑Fi, intended for homeowners who want long-life protection and clear readouts without network setup. The unit self-tests every 60 seconds and features an oversized mounting plate to hide previous installation marks for a cleaner ceiling or wall finish.

How does this combo alarm detect smoke and carbon monoxide?

The XP0H-SN integrates independent sensors for photoelectric smoke detection and an electrochemical CO sensor, each tuned to respond to their specific hazards. When either sensor detects a hazard at alarm thresholds, the device sounds a loud alert to notify occupants.

• Photoelectric sensor for smoldering and visible-particle smoke detection
• Electrochemical CO sensor for accurate carbon monoxide measurement
• Certified to UL 217 (smoke) and UL 2034 (CO) standards
• Distinct alarm signals to differentiate smoke vs. CO events

What maintenance and battery life can I expect?

This alarm comes with a sealed 10-year lithium battery, eliminating routine battery replacements and ensuring continuous power through the device’s service life. The unit runs an automatic self-test every 60 seconds to check sensors, electronics, and battery condition, reducing the need for frequent manual checks.

• Sealed 10-year lithium battery — no battery swaps required
• Automated self-test each minute to verify functionality
• End-of-life signal after service life to prompt replacement
• Visible LCD shows battery condition and CO readings on demand

How will the LCD and controls help in everyday use?

The backlit LCD remains off during standby and activates to show real-time CO concentration and battery status during tests or alarms, keeping unnecessary light and distraction to a minimum. A centrally located test/silence button simplifies checks and nuisance-silencing while maintaining clear on-device feedback.

• LCD displays current CO ppm and battery life when lit
• LCD stays dark in standby to avoid sleep disturbance
• One-button test/silence for easy monthly checks and nuisance pauses
• Audible voice and tone cues help identify the hazard type

Will the XP0H-SN fit my existing install and décor?

The alarm includes an extra-large 5.7‑inch (145 mm) mounting bracket to cover old screw holes and minor ceiling stains, offering a neater appearance after replacement. Because it’s a standalone unit without wireless interconnect, confirm the mounting footprint suits your location before purchase.

• Large 5.7-inch bracket hides previous installation marks
• Compact unit profile keeps a low visual impact on ceilings or walls
• Mounting package includes screws and anchors for secure attachment
• Note: not compatible with wireless interconnect or base stations

Who is this product for? The X-Sense XP0H-SN is aimed at homeowners, renters, and landlords seeking reliable dual hazard detection with minimal upkeep. It’s ideal for rooms where a single combined device is preferred, for installations where long battery life is a priority, and for anyone who wants clear CO readouts without networked features. If you need wireless interconnection across multiple alarms, consider the XP0H-WN model instead.