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5pcs Electronic DIY Kit MQ-3 Sensor Alcohol Detector Tester Alarm System Components Suite

3pcs Electronic DIY Kit MQ-3 Sensor Alcohol Detector Tester Alarm System Components Suite

3pcs Mini Crystal Film Square Blue LED Digital Thermometer Signal Light AC 50-380V 220V Temperature Meter Indicator Range -20-200℃ with 1m Sensor

3pcs Mini Crystal Film Square Red LED Digital Thermometer Signal Light AC 50-380V 220V Temperature Meter Indicator Range -20-200℃ with 1m Sensor

HD 1080P PTZ WIFI IP Camera Security Wireless Waterproof 2MP IR Night Vision