FIRST ALERT CO250B Family Gard Basics Carbon Monoxide Alarm 4-Pack | Battery Operated Carbon Monoxide Detector , White

Because carbon monoxide evenly distributes itself, it's important to have a detector on every level and in every bedroom of the home. This 4-Pack of First Alert Family Gard Basics Carbon Monoxide Alarms (CO250B) makes it easy to do so, all in one purchase. Even when gas can’t be seen, tasted, or smelled, the advanced electrochemical sensor accurately detects elevated carbon monoxide levels. If that happens, the 85-decibel siren sounds, regardless of potential electricity failures or power outages. This 9-volt carbon monoxide detector offers two silence options: one to mute the low-battery indicator and another that silences a triggered alarm for several minutes. Equipped with a tamper-resistant locking pin and a battery cover that won’t close if the battery is missing, its low-profile design and classic white casing blends into its surroundings.

• ELECTROCHEMICAL CO SENSOR | Highly accurate sensor detects elevated carbon monoxide levels from faulty fuel-burning appliances, blocked chimneys, and running cars in the garage even when gas can't be seen, smelled, or tasted
• RELIABLE 85-DECIBEL SIREN | Effectively warns occupants of CO threat through sound; provides protection even when electricity fails or during power outages
• LOW BATTERY INDICATOR & TEST SWITCH | Red LED power indicator flashes when battery needs replacing; test switch ensures alarm is functioning correctly
• TWO SILENCE SETTINGS | Low-battery chirp can be silenced for up to 8 hours; alarm itself can be silenced for several minutes
• TAMPER-RESISTANT LOCKING PIN & BATTERY COVER | Alarm cover locking pin helps prevent tampering and battery removal; battery cover won’t close if the battery is missing