Toxic gas detector and gas alarm of environment security sensor. AC plug in power or DC 9-28VDC NC or NO output with connection for home security system or fire alarm system.
Install at least one CO Alarm near or within each separate sleeping area.
For added protection, install an additional CO Alarm at least 20 feet (6 meters) away from the furnace or fuel burning heat source.

TECHNICAL SPECIFICATIONS
Unit Dimensions: 120mm (H) x 72 mm (W) x 42mm (D)
Color: Ceiling White
Operating Temperature: -10°C to +50°C
Ambient Humidity: ≤95% RH
Alarm Horn: 80dB
Operating Voltage(Options): AC110V-220V
More details at https://vedardalarm.com/co-detector-carbon-monoxide-alarm-ac-or-dc-power-nc-no-output-p-205
Power Consumption: <1.5W (Standby), <5W (Alarm)
Value of Detection Threshold (Lower Explosive Limit):
ALARM RESPONSE TIME(CO GAS):
>100ppm (Alarm in Less than 15 minutes)
>300ppm (Alarm in Less than 3 minutes)
Alarm: Red LED with 80dB alarm
Warm Up Time: approximately 60 Seconds
Alarm Output: Relay Output (2A@DC24V, 1A@220VAC)
(Only for relay output Module)
Voltage Output (DC12V pulse or steady)
(Only for Control Module)