1990a-f5 rw1990 Magnetic Dallas iButton DS1990A Tag

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1990a-f5 rw1990 Magnetic Dallas iButton DS1990A Tag

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Item	1990a-f5 rw1990 Magnetic Dallas iButton DS1990A Tag
Material	ABS , Stainless Steel
Size	ibutton size: 17mm*6mm
Color	Red, green, blue, yellow, black, etc
Working Temperature	-40 ~ +85 degree
Read-Write Method	Contact
Memory	64 bits
ID number	Engraved
Chip	RW1990A, RW1990B, DS1990A, TM1990-F5
Application	Intelligent Community, Postal Service, Railway St, etc.

What is 1990a-f5 rw1990 Magnetic Dallas iButton DS1990A Tag? ---- An iButton is a computer chip which is enclosed in a 16mm thick durable weather resistant stainless steel can. Because of their small size and extreme durability, iButtons can travel virtually anywhere. How does an 1990a-f5 rw1990 Magnetic Dallas iButton DS1990A Tag communicate? The iButton is a slave device and requires a master to initiate communication to it. A master can be a PC or a micro processor. With the master constantly polling the iButtons, communication to iButtons can be started by a simple touch to a 1-Wire interface called a Blue Dot Receptor. Every iButton has a unique 64-bit serial number, which gives it a unique 1-Wire network address. What are 1990a-f5 rw1990 Magnetic Dallas iButton DS1990A Tag being used for? iButtons are frequently attached to key fobs, rings, watches, or other personal items for applications such as access control to buildings and computers. Additionally, iButtons are commonly mounted to storage crates, trucks, and other equipment for asset management. Furthermore, iButtons are mounted to refrigeration units, outdoor environments, and even to animals for various data logging tasks

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1990a-f5 rw1990 Magnetic Dallas iButton DS1990A Tag

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