The Kidde Fire Sentry i9040 is a compact 4-inch ionization smoke alarm offering discreet protection where standard-size alarms are too large. Its small profile fits easily in tight spaces or low-ceiling areas without compromising detection capability. Two versions are available: the 0914 and the 0914E, which includes a 5-inch mounting plate for replacing standard 5-inch alarms. This model has been replaced by the Kidde 10SDR.
What is the Fire Sentry product line?
Fire Sentry is Kidde compact budget smoke alarm line, offering essential ionization fire protection in a smaller 4-inch footprint. It is designed for spaces where a standard 5-6 inch alarm would be too prominent or not fit.
What is the difference between the i9040 and the i9040E?
The i9040E includes a 5-inch mounting adapter plate, allowing it to replace existing 5-inch smoke alarms without leaving a visible gap or ring on the ceiling or wall.
Does the i9040 have a Hush feature?
No. The Fire Sentry i9040 does not include a Hush feature. For an alarm with nuisance alarm silencing, consider the Kidde 20SDR or 10SDR DETECT-line models.
What battery does the i9040 use?
The i9040 runs on a standard 9V alkaline battery. Replace the battery when you hear the low battery warning chirp, or at minimum once per year.
What replaced the i9040?
The i9040 has been replaced by the Kidde 10SDR, a DETECT-line 4-inch photoelectric smoke alarm with enhanced sensing technology and AA battery power.
# Kidde Fire Sentry Battery Operated 4-Inch Smoke Alarm **Model:** `i9040` **Brand:** Kidde **Category:** Smoke Alarm Battery > The Kidde Fire Sentry i9040 is a compact 4-inch ionization smoke alarm offering discreet protection where standard-size alarms are too large. Its small profile fits easily in tight spaces or low-ceiling areas without compromising detection capability. Two versions are available: the 0914 and the 0914E, which includes a 5-inch mounting plate for replacing standard 5-inch alarms. This model has been replaced by the Kidde 10SDR. ## Specifications | Attribute | Value | |---|---| | Product Type | Smoke Alarm | | Alarm Type | smoke | | Sensor Smoke | ionization | | Power Source | battery-aa | | Battery Backup | No | | Battery Type | 9V | | Battery Replaceable | Yes | | Voice Alerts | No | | Smart Wifi | No | | App Connected | No | | Ring Ecosystem | No | | Interconnect | No | | Interconnect Type | none | | Wire Free Rf | No | | Self Testing | No | | Hush Feature | No | | Smart Hush | No | | Strobe | No | | Egress Light | No | | Alarm Db | 85 | | Ul Smoke | UL 217 | | Warranty Years | 10 | ## What's Included - alarm unit - 9V battery - mounting hardware - quick install guide Source: https://www.jaspecs.com/kidde/smoke-alarm-battery/i9040-kidde-fire-sentry-battery-4inch-smoke-alarm/