NEWS

Carbon monoxide is a colorless, odorless gas, so knowing the normal carbon monoxide range is essential for home and workplace safety. In homes without gas stoves, typical CO levels are about 0.5 to 5 ppm. Near properly adjusted gas stoves, levels often stay around 5 to 15 ppm. Poorly adjusted appliances may push CO levels to 30 ppm or higher, which increases health risk. For exposure safety, 50 ppm is widely used as an upper 8-hour workplace limit. Once carbon monoxide rises beyond that level, the danger grows with both concentration and exposure time. Around 200 ppm, people may develop headache, dizziness, and nausea after several hours. Around 400 ppm, serious symptoms can appear faster and the risk becomes life-threatening with continued exposure. At even higher levels, collapse and death can occur quickly. A reliable carbon monoxide detector helps you discover danger before symptoms become severe. For homes, apartments, hotels, garages, boiler rooms, and commercial sites, choosing the right carbon monoxide alarm or gas leak and carbon monoxide detector improves response speed and protects lives. If you want better safety control, select a detector with a clear ppm display, stable sensor performance, and a detection range matched to your environment.

1. High rise public buildings where to install fire alarm manual call points (1) Class I high-rise public buildings ⑵ Class II high-rise public buildings ① Combustible material warehouse with S>50 ㎡ ② A business hall with an area of S>500 square meters. 2. Residential where to install fire alarm manual call points (1) Super high-rise residential buildings ⑵ High rise residential buildings with 54 ＜ H ≤ 100 ① Fire alarm system installed in public areas ② Built in detector For high-rise residential buildings with a height of 27 ＜ H ≤ 54m, only fire alarm systems need to be installed in public areas 3. Special Places where to install fire alarm manual call points (1) Song and dance entertainment screening and entertainment venues (2) Children’s rooms in kindergartens (large and medium-sized) ⑶ Old building (4) The ward building of a sanatorium (S>1500m2 on any floor or S>3000m2 in the total building) (5) Hotel building (any floor S ＞ 1500m2 or total building S ＞ 3000m2) (6) Shops, exhibitions, finance and trade, passenger and freight transportation (any floor S ＞ 1500m2 or total building S ＞ 3000m2), underground semi underground stores (total S ＞ 500m2) (7) Shoemaking, clothing, toys, electronics and......

Knowing where to install a fire alarm manual call point is essential for faster emergency response and safer evacuation. In many buildings, people may spot smoke, flame, or unusual heat before automatic detection starts the full alarm process. A well-placed manual call point helps occupants raise the alert without delay. In high-rise public buildings, installation planning should focus on areas with high traffic, complex escape routes, or higher fire load. These locations often include entrances, exit routes, stairwell access points, combustible material warehouses over 50 square meters, and business halls larger than 500 square meters. In these spaces, a fire alarm manual call point supports quicker human action and improves evacuation efficiency. In residential buildings, the layout depends on building height and fire system design. Super high-rise residential buildings and high-rise residential buildings above 54 meters usually need alarm devices in public areas. Corridors, lobbies, stairwells, and other shared escape routes are common installation points. In residential buildings between 27 and 54 meters, public-area alarm coverage remains a key requirement. Clear placement increases visibility and helps residents respond faster during an emergency. Special-use buildings need even more careful planning. These projects include entertainment venues, kindergarten children’s rooms, old buildings, sanatorium......

gas leak and carbon monoxide detectors