OPTIONAL LOCKING FEATURES

The optional locking features are designed to prevent unauthorized removal of the battery or alarm. It is not necessary to activate the locks in single-family households where unauthorized battery or alarm removal is not a concern.

These CO Alarms have two separate locking features: one to lock the battery compartment, and the other to lock the CO Alarm to the mounting bracket. You can choose to use either feature independently, or use them both.

Tools you will need: • Needle-nose pliers • Standard flathead screwdriver.

Both locking features use locking pins, which are molded into the mounting bracket. Depending on which locking features you use, remove one or both pins from the mounting bracket using needle-nose pliers.

To permanently remove either locking pin, insert a flathead screwdriver between the locking pin and the lock, and pry the pin out of the lock.

TO LOCK THE BATTERY COMPARTMENT

Do not lock the battery compartment until you install the batteries and test the CO Alarm.

If the unit does not alarm during testing, DO NOT lock the battery compartment! Install new batteries and test again.

If the CO Alarm still does not alarm, replace it immediately.

1. Using needle-nose pliers, detach one locking pin from the mounting bracket.

2. After batteries are inserted, then push the locking pin through the hole near the battery door latch on the back of the CO Alarm.

TO UNLOCK THE BATTERY COMPARTMENT

1. Remove the CO Alarm from the mounting bracket. If the unit is locked to the bracket, see the section

“To Unlock the Mounting Bracket.”

2. Insert a flathead screwdriver under the head of the locking pin, and gently pry it out of the battery compartment lock. (If you plan to relock the battery compartment, save the locking pin.)

3. To relock the battery compartment, close the battery door and reinsert locking pin in lock.

4. Reattach the CO Alarm to the mounting bracket.

When replacing the batteries, always test the Alarm before relocking the battery compartment.

TO LOCK THE MOUNTING BRACKET

1. Using needle-nose pliers, detach one locking pin from the mounting bracket.

2. Insert the locking pin through the hole on the back of the CO Alarm as shown in the diagram.

3. When you attach the CO Alarm to the mounting bracket, the locking pin’s head will fit into a notch on the bracket.

TO UNLOCK THE MOUNTING BRACKET

1. Insert a flathead screwdriver into the rectangular cut-out on the mounting bracket nearest to the locking pin.

2. Pry the CO Alarm away from the bracket by pushing up on the screw- driver and turning the CO Alarm counterclockwise (left) at the same time.

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First Alert CO511CN Optional Locking Features, To Lock the Battery Compartment, To Unlock the Battery Compartment
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CO511, CO511CN specifications

The First Alert CO511CN, CO511 is a highly regarded carbon monoxide detector that emphasizes safety and user-friendliness. Carbon monoxide (CO) is a colorless, odorless gas that can be lethal, making reliable CO detection a critical addition to any home. The CO511CN, CO511 model boasts several features and technologies designed to ensure early detection and peace of mind for homeowners.

One of the standout features of the CO511CN is its advanced electrochemical sensor technology. This technology is known for its accuracy in detecting low levels of carbon monoxide, ensuring that users are alerted to potentially dangerous conditions without unnecessary false alarms. The electrochemical sensor is not only effective but also long-lasting, providing reliable performance over time.

The CO511CN is designed with a unique digital display that shows CO levels, providing real-time information about the air quality in the home. This feature allows users to monitor CO levels continuously, making it easier to identify any concerning spikes. Additionally, the unit is equipped with a peak level memory that records the highest CO level detected, which can be helpful for understanding exposure history.

Another significant aspect of the First Alert CO511CN is its user-friendly design. The device requires minimal maintenance and features a low battery chirp warning that alerts users when it’s time to replace the batteries. This ensures that the detector remains functional without the need for constant checks. The CO511CN is also equipped with a test/silence button, allowing users to verify the unit's operation and silence false alarms easily.

In terms of installation, the First Alert CO511CN can be mounted on a wall or placed on a tabletop, offering versatility in placement to suit individual needs. Its compact design ensures it can fit seamlessly into any room without being obtrusive.

The CO511CN adheres to safety standards established by Underwriters Laboratories (UL) and is backed by a limited five-year warranty, further assuring users of its reliability and durability. With its combination of advanced sensing technology, user-focused features, and reliable performance, the First Alert CO511CN is an excellent choice for protecting homes against the dangers of carbon monoxide.
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