The best-selling KXB127 mining sound and light voice alarm

Sound and light voice alarm for mining
Mining News (Coal prices may rise slightly)
The main monthly operating data released by China Shenhua showed that its commercial coal production was 10,000 tons, a year-on-year decrease Coal sales volume was 10,000 tons, a year-on-year decrease. In addition, China Coal Energy's sales in the previous month also dropped by nearly 20%. In March, China Coal Energy's commercial coal production was 10,000 tons, a year-on-year decrease. In the month-on-month decrease, China Coal Energy's cumulative commercial coal production was 10,000 tons, a year-on-year decrease. Cumulative commercial coal sales in March were 10,000 tons, a year-on-year decrease. According to incomplete statistics, thermal coal prices have stopped falling and stabilized, and may see a slight rise in the future. The coal industry is expected to be stable.
Product introduction of mining sound and light voice alarm
Mine sound and light voice alarm (coal safety certificate number) is mainly used in places containing explosive gases underground in coal mines, such as the entrance and exit of transportation tunnels or three-way bends. It can also be used as a point or sound and light alarm at the road, and can also be used as a sound and light alarm for shaft lifting fork rails to indicate curves and alarms to ensure work safety.
Structural features of mine sound and light voice alarm
Mine sound and light voice alarm has two cavities in one body, which separates the explosion cavity and intrinsically safe cavity. The circuit uses an integrated voltage comparator and high-sensitivity electro-optical coupling. Device, modular design. The overall layout is reasonable, small in size and light in weight.
The mine sound and light voice alarm has two states, one is the standby state and the other is the alarm state. If the operator operates the button twice or more in succession, the mining sound and light voice alarm changes to the alarm state. During the alarm process, the operator presses the button once, the alarm stops, and the mining sound and light voice alarm changes to the standby state. This device can also be used in tandem with an electric bell at the same time, and the operation method is the same.
Technical parameters of mine sound and light voice alarm
Working voltage and working current
Intrinsic safety parameters
Sound loudness is not less than
Light signal visible distance Light signal in the dark visible.
Physical picture of mining sound and light voice alarm
As of January 2019, the development of my country's coal industry is not optimistic. Vice President of the China Coal Industry Association
Jiang Zhimin made a statement that the supply and demand relationship in the national coal market may gradually improve in 2020. However,
it is difficult to fundamentally change the situation of oversupply and the operating pressure of enterprises is heavy. , the operation situation of the entire coal industry is still grim. Up to now, my country's coal production has reached 100 million tons, but if the scale under construction reaches more than 100 million tons, the pressure to release coal production capacity will gradually increase. , how to deal with challenges
? Dongda will definitely meet the challenges actively, surpass itself in the challenges, adhere to product credibility as always, improve product quality, and work with major mining companies to spend a challenging year! Dongda Group Announcement
Contact person Zhang Shasha
Mobile Wangwang
Landline fax
Email@
Address Jining, Shandong, China
Domestic News Express
This morning , a Fujian netizen posted a complaint accusing his 18-year-old boy of having his ear pierced with staples by a kindergarten teacher, and attached multiple photos of the boy and a hospital diagnosis. The reporter just learned from the local education bureau that it was true that the boy was injured, and the local education department and public security department are investigating the matter. Netizens posted this morning that the 19-year-old child found no abnormalities when he came home from school, but while taking a bath, the child cried loudly and complained that his ears hurt. The parents discovered that there was a staple in the child's ear. After questioning, the child cried and complained that the teacher used a stapler to staple it during lunch break.
Collection of Jokes
I just fell into the sewer and was about to go home when I came up. I met a beggar on the road. Seeing how pitiful he was, I was going to give him some money. I reached into my pocket and after searching for a long time, I found that I forgot to bring money when I went out. Then The beggar looked at me and took out two pieces a piece from the bowl and handed them to me, saying, brother, go buy something to eat, Ci'ao, am I that unbearable? ?
The paper was handed in early. The teacher asked me why there are so many black spots on your paper? I smiled slightly and didn't click anywhere.
A rich second-generation man is getting married. The bride heard that he was very philandering and had countless girlfriends. The bride is very jealous, but because of her face, she couldn’t ask him directly, so she secretly used his account to post a Weibo message saying “I’m sorry to everyone!” I'm the worst ex-boyfriend ever! After posting this Weibo post, the bride went to do other things. When she came back, she found a message from the Weibo secretary on the notification bar of her phone. She clicked on it and saw it, congratulations! Your Weibo post just set a new record for the most likes on Weibo