1, use the computer to have degree Pregnant mothers are advised to use fewer computers. The distance from the monitor should be kept at 60 cm. It is best to wear special radiation protection clothes for pregnant women, or to add anti-radiation screens to the computer. Try to replace the monitor with a liquid crystal display or switch to a laptop. The location of the computer is also very important. Try not to let the back of the screen face toward someone. Because the strongest radiation is the back of the computer, followed by the left and right sides. The front of the screen is weak. 2, shorten the time watching TV The time for pregnant women to watch TV should be controlled within two hours per day, and the distance from television should be as far as possible. At the same time to reduce the standby time, when the TV is stopped, it is best not to let it stand in a long time, because at this time can produce a weak electromagnetic field, radiation will accumulate for a long time. 3, pay attention when using the phone The mobile phone is best placed 3 meters away from the body, especially not on the abdomen. When charging the phone, do not get too close to it. It is best to turn off the charger. When the mobile phone is talking during the moment of connection and charging, the electromagnetic radiation released is the largest, so it is better to answer the phone after the mobile phone rings for a second or two. Do not answer the phone while charging. 4, avoid using electric blanket Pregnant women should also pay attention to another source of radiation, that is, electric blankets. Many pregnant mothers often use electric blankets for a long time in the winter because they are afraid of cold. They should be aware that this is one of the most severely radiated appliances. After the electric blanket is energized, it will generate electromagnetic waves that are harmful to the health of the baby, and the hotter and longer the electric blanket, the greater the impact on the baby's central nervous system and may even cause deformities. Home appliance brand
Sectional Door Accessories: motor 220V-380V, control box, spring break device, cable break device , aluminum alloy rope pulley, enhanced shaft bracket, air bag system, duplex enhanced guide wheel bracket.
Detail introduction for above main accessories
1.Motor and controller:
The garage door operator is designed for residential overhead sectional and tilt doors.
The operator memorizes the limit positions and unique braking system that slows the unit down at the end of its travel.
Rolling code remote control with max. 20 pcs hand transmitters.
The operator is equipped with a manual release lever which allows manual operation of the door in case of power failure.
The controller has a security LOCK function which prevents operation of the door from transmitter.
2.spring break device:
Sectional doors are hinged and they bend in the tracks as the door opens and closes. Many of these doors are counterbalanced with extension springs, also designated "stretch springs," and they have seven characteristics. The length is the measurement of all the coils pressed together. This, along with the inside diameter of the coils and wire size - the thickness of the wire from which the springs are made - determine the stretch, the distance the spring is extended - normally half the door height, and pull, the force the spring pulls when stretched its normal length. The type of ends determine how the ends of the spring are mounted. The initial tension is the percentage of pull needed to separate the coils. This is determined by the pitch with which the springs are wound. On sectional garage door springs this is normally 15 percent. For example a 100 pound pull spring requires 15 pounds of weight to separate the coils; when a door is open the two springs will support 15 pounds of door weight without any stretch.
Most extension springs are made of oil tempered wire. These are normally coated or painted. Some springs are made of galvanized wire.
3.able break device:
cable break device ,door hardware
adjustable bottom bracket .
the raw material hot plate
zinc plated
safety device
adjustable bottom bracket
the raw material hot plate
zinc plating
spring safety device ,2" and 3" safety device
once the cable is broken ,this devoice can keep the hurt away from the door falling
4.aluminum alloy rope pulley
Equipment: CNC stamping/punching machine, CNC bending machine, CNC cutting
machine, 5~250 tons punching machines, welding machine, polish machines...
Processed material: stainless steel: copper, carbon steel
Surface treatment: Hot galvanized, polishing
Making process:Stamping, deep drawing,bending, punching, laser cutting,threading,
welding, tapping, riveting, grinding
5.air bag system
It is a safety device. When the door is down to hit something, it will up automatically.
Operation pressure:<3mbar
Battery:CR2032*2
Battery lifetime>1 year
Emission frequency: 315MHZ
Emission power:<10mW
Receiver power source:12V
6.duplex enhanced guide wheel bracket
Determining the right type of sectional door roller for your garage door tracks can be a little confusing, especially when you do not know what you need to look for in a garage door roller. To simplify things, there are two primary things you need to be aware of. First are the actual dimensions of the roller, and second is purpose that you will be using the door for. You can read below about measuring your roller and choosing the right quality of material for your door.
Other Door Accessories,Electronic Door Accessories,Automatic Door Accessories,High Speed Door Radar Detector Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.pvchighspeeddoor.com
7 Coupons for Radiation Protection During Pregnancy Make Pregnant and Baby Better
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