The Kidde i1040 Micro is a compact 4-inch ionization smoke alarm with a 10-year sealed lithium battery — no battery replacements needed for the life of the alarm. Activation is automatic upon mounting with no pull-tabs or switches. A single button handles both Hush and test functions. The flashing LED has four modes: standby, alarm, Hush, and memory set, giving clear status at a glance.
Does the i1040 Micro ever need a battery replacement?
No. The i1040 has a factory-sealed 10-year lithium battery that cannot be replaced. After 10 years of service, a chirp alerts you to replace the entire alarm unit.
What is the size of the i1040 Micro?
The i1040 has a compact 4-inch diameter, making it one of the smallest Kidde smoke alarms. It is ideal for spaces where a standard-size alarm would be too large or too visible.
How do I silence a nuisance alarm on the i1040?
Press the single button to activate the Hush mode, which temporarily silences the alarm. The same button can also be used to test the alarm circuitry. The LED will indicate Hush mode is active.
What do the LED status indicators mean on the i1040?
The i1040 LED has four modes: steady flash in standby (normal operation), rapid flash in alarm mode, slow flash in Hush mode, and memory set mode to indicate which unit was the initiating alarm.
Where should I install the i1040 Micro?
Install the i1040 in any room requiring fire protection, especially in spaces too small for a standard-size alarm. Mount on the ceiling or high on the wall per NFPA 72 guidelines.
# Kidde Micro 10-Year Sealed Battery Smoke Alarm **Model:** `i1040` **Brand:** Kidde **Category:** Smoke Alarm Battery > The Kidde i1040 Micro is a compact 4-inch ionization smoke alarm with a 10-year sealed lithium battery — no battery replacements needed for the life of the alarm. Activation is automatic upon mounting with no pull-tabs or switches. A single button handles both Hush and test functions. The flashing LED has four modes: standby, alarm, Hush, and memory set, giving clear status at a glance. ## Specifications | Attribute | Value | |---|---| | Product Type | Smoke Alarm | | Alarm Type | smoke | | Sensor Smoke | ionization | | Power Source | battery-10yr-sealed | | Battery Backup | No | | Battery Type | 10-year sealed lithium | | Battery Replaceable | No | | Battery Life Years | 10 | | Voice Alerts | No | | Smart Wifi | No | | App Connected | No | | Ring Ecosystem | No | | Interconnect | No | | Interconnect Type | none | | Wire Free Rf | No | | Self Testing | Yes | | Hush Feature | Yes | | Smart Hush | No | | Strobe | No | | Egress Light | No | | Alarm Db | 85 | | Ul Smoke | UL 217 | | Warranty Years | 10 | ## What's Included - alarm unit (battery pre-installed) - mounting hardware - quick install guide Source: https://www.jaspecs.com/kidde/smoke-alarm-battery/i1040-kidde-micro-10year-battery-smoke-alarm/