1. Alarm installation location: within 1.5 meters from the air source radius, well ventilated:
(1) Liquefied gas is heavier than air and is installed about 0.3 meters from the ground. (2) Natural gas, city gas, carbon monoxide, etc. are lighter than air and are installed about 0.3 meters from the ceiling.
2. The location where the alarm cannot be installed: the location where the air is not easy to circulate in the corner, the cabinet, etc .;
3. The gas alarm uses a wide range of voltages. Commonly, it is a 220V civilian voltage product. Generally, the voltage of 12V is relatively rare. The power supply method uses a telephone line interface. Small and practical!