Honeywell Ademco 5800CO Wireless CO Detector ( 3 Pack Only )

Electrochemical Sensing: Accurate detection of CO levels.
Wireless Communication: Sends alarm, trouble, end-of-life, tamper, and battery condition messages to the system’s receiver.
Battery Operated: Powered by a 3V battery for reliable performance.
Local Sounder: Equipped with a piezoelectric horn that generates the ANSI S3.41 temporal 4 pattern in an alarm condition.
Test/Hush Button: Allows for immediate silencing of the local sounder and testing of the unit.
LED Indicators: Dual LEDs provide visual status of the detector’s operation.
Easy Installation: Can be surface-mounted to walls or ceilings with optional drywall anchors included.