Overview
5800 Series smoke, heat, or CO wireless life-safety transmitter — supervised fire/CO zone on compatible panels (5800CO, 5800COMBO, smoke SKUs).
Life-safety devices have stricter placement and testing requirements than burglary sensors. Follow NFPA/local code, use professional monitoring where required, and never substitute takeover modules for fire or CO hardwire.
At a Glance
| Specification | Details |
|---|---|
| Detection | Smoke, heat, CO — SKU specific |
| Wireless | 345 MHz 5800 Series |
| Life safety | Follow code; professional monitoring recommended |
| Maintenance | Replace per manufacturer service life |
What This Device Does Well
Provides reliable supervised status at the panel and Total Connect 2.0 when installed, enrolled, and range-tested correctly.
Before You Service or Replace One
- Device age — smoke/CO sensors expire; replace per label date.
- Zone type — fire vs burglary programming differs; do not bypass without authority.
- FireFighter placement — acoustic path to standalone smoke alarms.
- Monitoring — central station fire test procedures for monitored accounts.
Official Sources
- Resideo product page
- User Manual for CO400 Carbon Monoxide Alarm (English, Spanish)
- CO400B_ETL Listing Card
- CO400B Specification Sheet
Use official Resideo install PDFs and install guides for exact wiring, enrollment, and firmware — specifications vary by SKU and region.
Error Codes
Honeywell systems report faults on the panel and keypad status screens, zone list, and Total Connect 2.0 (when interactive service is active) — not as a single universal numeric code list across all models.
How to read status
- Open panel status or installer menu → zones / troubles.
- Note zone number, trouble type (open, tamper, low battery, missing, cell fail).
- Cross-check Total Connect 2.0 device list if the account is interactive.
- For cell issues, run installer communication test before replacing sensors.
Common trouble indicators
| Symptom | Meaning | First checks |
|---|---|---|
| Smoke/CO trouble | Device supervision fault | Battery, tamper, clean/replace per life |
| No alarm on test | Placement or sensitivity | Test per UL method; verify zone type |
| FireFighter no trip | Acoustic path blocked | Distance to existing smoke alarm; volume test |
| Cannot arm (fire) | Fire zone fault | Resolve trouble before arming — do not bypass life safety without policy |
Panel actions (typical)
| Action | Where |
|---|---|
| View zone status | Panel home / status → zones |
| Walk test | Installer menu → walk test |
| Delete / enroll sensor | Installer → wireless enrollment |
| Cell test | Installer → communication tests |
| Total Connect 2.0 status | Dealer portal or customer app |
Source: 5800 smoke/CO install guide; Resideo official resources linked in this product folder manifest.
| Code | Meaning | Suggested Fix |
|---|---|---|
| Smoke/CO trouble | Device supervision fault | Battery, tamper, clean/replace per life |
| No alarm on test | Placement or sensitivity | Test per UL method; verify zone type |
| FireFighter no trip | Acoustic path blocked | Distance to existing smoke alarm; volume test |
| Cannot arm (fire) | Fire zone fault | Resolve trouble before arming — do not bypass life safety without policy |
| Action | Where | |
| View zone status | Panel home / status → zones | |
| Walk test | Installer menu → walk test | |
| Delete / enroll sensor | Installer → wireless enrollment | |
| Cell test | Installer → communication tests | |
| Total Connect 2.0 status | Dealer portal or customer app |