4-Pack, Smoke and Carbon Monoxide Detector, Smoke Detector Carbon Monoxide Detector Combo with Test Button, Digital Display, 85dB Alarm for Home and Office
High Sensitivity Alarms: This smoke alarm and carbon monoxide detector s equipped with 2 sensors for more accurate detection of danger and timely alerts
Battery Alert: Carbon monoxide detectors，smoke detector equipped with batteries. When the batteries are low, an alarm will be triggered to remind you to change them
Test Button: This fire alarm smoke detectors tests alarm and battery status at the touch of a button, the alarm sounds over 85 dB, so be careful to keep it at arm's length
Digital Display and LED Alerts: Carbon monoxide detectors/smoke alarm with LCD displays. When a danger is detected, the display shows data and flashes a red LED
Easy to Use: Smoke carbon monoxide detector with batteries, supplied with accessories and detailed user manual, suitable for mounting on ceilings and walls
