Sentry KF31
SENTRY

Interconnectable Sentry Mains Heat Alarm with Rechargeable Lithium Back‑Up

KF31R
Location
Kitchen, Garage, Loft (converted or unconverted)
Sensor

Thermistor heat

Warranty
10 years
Power
230V AC mains with rechargeable battery back‑up
Back-up battery
10-year rechargeable / Sealed Lithium
Alarm Grade
Grade D1

Specifications

Model
Power Source
Sensors
Audio Alarm
Interconnection
Approvals / Certification
Dimensions
Weight
Temperature Range
Storage and Transport
Humidity Range
Warranty
  • Fully compatible with existing Kidde FIREX hardwired systems
  • Clear 4‑SKU Sentry range across Smoke and Heat, Grade D1 and D2
  • Installer‑first design supports faster fitting and cleaner replacements
  • Supported by full launch assets including datasheets, product imagery and sell‑in materials

Product Documentation

Comparison Chart

Model Number
Detection Type
Power Source
Battery Life (Minimum)
Never Change Battery
Interconnected Alarms
Voice Alerts
NCC Certified (for Motorhomes / Static Homes)
10-Year Warranty
kf31r sentry
KF31R
Heat
AC / Hard-wired
Backup battery only
Check
Check
Minus
Check
Check
KF31
Heat
AC / Hard-wired
1-year (Back-up battery only)
Minus
Check
Minus
Minus
Check
KF30
Heat
AC / Hard-wired
1-year (Back-up battery only)
Minus
Check
Minus
Minus
Minus
KF30R
Heat
AC / Hard-wired
Backup battery only
Check
Check
Minus
Check
Minus