Product Description
Defender CA6150 + LL6270 Carbon Monoxide Alarm and Low-Level Monitor Kit
The Defender CA6150 + LL6270 carbon monoxide alarm and low-level monitor kit brings together two complementary functions: an ANSI/UL 2034-listed residential alarm and a supplemental low-level CO monitor. It includes one CA6150 and one LL6270.
The CA6150 supplies the listed-alarm role where that battery-powered alarm type meets applicable installation requirements. The LL6270 adds automatic display from 5 ppm, a timed visual alert at 9 ppm, and a timed audible alert at 15 ppm. You get the listed residential-alarm function and additional low-level monitoring in one package.
Why Buy Both Models?
Meeting a listing requirement and monitoring low CO concentrations are different needs. The CA6150's button-operated low-level readout is useful, but you must press the button to check those lower readings. The LL6270 automatically displays lower detected concentrations and gives warnings at its documented low-level thresholds.
- Keep the listed residential-alarm function: CA6150 is UL listed to ANSI/UL 2034.
- Add low-level warnings: LL6270 supplies automatic visual and audible warnings at concentrations below CA6150's specified alarm-response test points.
- See what was detected: Both units provide peak-level and peak-duration recall.
- Avoid routine battery changes: Both use sealed, non-removable lithium batteries. Their warranty and replacement intervals differ.
- Buy the two functions together: One package combines the residential alarm and supplemental monitor; each unit retains its own controls and installation requirements.
What Is Included?
- One Defender CA6150 residential carbon monoxide alarm.
- One Defender LL6270 supplemental low-level carbon monoxide monitor.
Follow the individual product manuals for mounting, activation, testing and operation.
Compare the Two Included Models
| Feature | CA6150 | LL6270 |
|---|---|---|
| Primary role | UL-listed residential CO alarm | Supplemental low-level CO monitor |
| Listing status | UL listed to ANSI/UL 2034 | Not UL listed |
| Automatic current display | 30-999 ppm | 5-500 ppm |
| Button-operated reading / memory | Current and peak from 10 ppm; peak duration | Peak from 5 ppm; peak duration |
| Low-level warning behavior | Manual low-level readout is not a low-level audible alert | Visual alert: 9 ppm within 10 minutes; audible alert: 15 ppm within 60 minutes |
| Power | Sealed lithium batteries | Sealed lithium batteries |
| Limited factory warranty | Ten years for alarm and batteries | Three years for monitor and batteries |
| Recommended replacement | Ten years from installation | Every three years to maintain display accuracy |
| Use | Conditioned indoor locations | Conditioned indoor locations |
Display and Alarm Timing
Concentration and time both matter. The LL6270's 5 ppm behavior is a display function, not an audible alarm.
| Model / CO level | Function | Specified response |
|---|---|---|
| LL6270 / 5 ppm | Display | Within 1 minute |
| LL6270 / 9 ppm | Visual alert | Within 10 minutes |
| LL6270 / 15 ppm | Audible alert | Within 60 minutes |
| LL6270 / 25 ppm | Visual alert / audible alarm | Visual within 1 minute; audible within 30 minutes |
| LL6270 / 50 ppm | Audible alarm | Within 15 minutes |
| LL6270 / 100 ppm | Audible alarm | Within 5 minutes |
| LL6270 / 150 ppm | Audible alarm | Whenever detected |
| CA6150 / 70 ppm | Alarm | 60-240 minutes |
| CA6150 / 150 ppm | Alarm | 10-50 minutes |
| CA6150 / 400 ppm | Alarm | 4-15 minutes |
The CA6150 values are documented alarm-response test points, not a universal prohibition on alarms below 70 ppm. Follow the manual's action instructions whenever either device alerts.
Why Low-Level Monitoring Matters
Air-quality guidance and residential alarm standards address different questions. For example, the EPA's outdoor ambient-air standards specify CO levels of 9 ppm averaged over eight hours and 35 ppm over one hour. WHO's 2021 air-quality guideline gives a 24-hour CO value of 4 mg/m³.
These exposure values are not residential alarm setpoints, product certifications or guarantees of safe indoor air. They show why a listed alarm's silence is not a complete assessment of low-level exposure. The LL6270 provides additional information and warnings while the CA6150 supplies the listed residential-alarm role.
Is This Kit Right for Your Home?
Choose the kit if you want both a listed residential CO alarm and automatic low-level monitoring, and the CA6150's battery-powered, single-station design is appropriate for your property. If you already have suitable listed alarms and want only supplemental monitoring, LL6270 alone may be the addition you need. For the listed alarm by itself, view CA6150.
Installation matters: the kit is two separate devices, not an interconnected system. It does not automatically satisfy every local requirement or provide every alarm needed throughout a home. Confirm placement, quantity, power and interconnection requirements. Only the CA6150 is UL listed; the package does not make LL6270 UL listed.
Shared Physical Specifications
| Package composition | Two separate CO devices: CA6150 + LL6270 |
|---|---|
| Sensor type | Electrochemical sensors |
| Operating conditions | 40-100°F; 10-95% relative humidity |
| Individual instrument size | Each: 5½ × 3¾ × 1â…œ inches |
| Individual instrument weight | Each: 8 oz |
| Country of manufacture | Canada |
Neither unit is intended for vehicles or unconditioned spaces. Neither detects smoke or other gases. Package shipping dimensions and weight differ from individual instrument measurements.
Frequently Asked Questions
Does this kit meet building code and provide low-level monitoring?
It combines a UL 2034-listed CA6150 with supplemental LL6270 monitoring. Compliance depends on the local installation requirements and whether this alarm type is permitted; purchasing the kit alone does not establish compliance.
Will the LL6270 sound at 5 ppm?
No. It displays at 5 ppm within one minute. Its visual alert starts at 9 ppm within ten minutes and its audible alert at 15 ppm within sixty minutes.
Why not just check the CA6150 display?
Its button lets you inspect lower readings, but requires action from you. LL6270 adds automatic low-level display and timed warnings.
Is the entire kit UL listed?
The CA6150 is UL listed to ANSI/UL 2034. LL6270 is not UL listed. Their separate roles and listing status remain unchanged in the kit.
Do both units last ten years?
No. CA6150 has a ten-year limited warranty and ten-year replacement interval. LL6270 has a three-year limited warranty; Defender recommends replacement every three years to maintain accuracy.
Are the two devices wirelessly connected?
No wireless or wired interconnection is claimed. They are separate single-station units. Choose an appropriate system if your installation requires interconnected alarms.
