CO sensor for CO alarm

Product Specifications /FeaturesMQ-7 gas sensor has high sensitity to Carbon Monoxide. The sensor could be used to detect different gases contains CO, it is with low cost and suitable for different application.Sensor Type: SemiconductorStandard Encapsulation: PlasticDetection Gas: Carbon MonoxideConcentration: 10-10000ppm COCircuit Loop Voltage: Vc ≤10V DCHeater Voltage VH: 5.0V±0.2V AcorDC(High)1.5V±0.1V ACorDC(Low)Heater Time TL: 60±1S(High)90±1S(Low)Load Resistance RL: