VS1990A is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through the 1-Wire protocol, which requires only a single data lead and a ground return.
Every VS1990A guaranteed unique 64-bit registration number that allows for absolute trace ability. The durable stainless-steel iButton package is highly resistant to environmental hazards such as dirt, moisture, and shock. Its compact coin-shaped profile is self-aligning with mating receptacles, allowing the VS1990A to be used easily by human operators.
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iButton Specification |
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Material |
Memory chips stored inside the button-shaped, water-proof and stainless steel case. |
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Dimension |
16.3mm*5.6mm |
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Weight |
1.6g |
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Storage Temperature |
-30°C - +80°C |
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Data Storage |
Unique ID serial number (read only) |
Protect Checkpoint tags---outdoor mount
checkpoints ,install at outdoor . it needs more rugged . waterproof ,dust proof ,anti-vandal and so on .so can use a outdoor mount to protect it
