Waterproof 64 Bit DS1990A-F5 Bracelets Silicone Wristband for GYM
Waterproof 64 Bit DS1990A-F5 Bracelets Silicone Wristband for GYM
Description
iButton bracelet (or iButton wristband) is smilar to a button battery in shape and can be inlaid into a card, key button and other objects.
You can replace the data line, address line, control line and power line with a single line so that TM card achieves single line communication through a multi-function device. When the host is powered, TM card gives response to the host through switching the impedances between 50Ω and 500,000Ω. The lengths of time the signal is pulled down(long or short) show the digital logics. Due to the range of witching impedances is 1-10,000, resistances of the contact points will not affect identification of the digital signals.
IButton TM watch card is a convenient and durable for intelligent TM worn on the wrist above the shaped card varieties.
Key Features
- Shockproof and waterproof
- resistant to high temperatures
- closed-loop wrist strap
- flexible, easy to wear and easy to use
| Failure Rate: | 1 /100,000 times ( used properly) |
| Original Serial Number: | 64 bits |
| Security: | 64 bits encrypt passwords |
| Memory Capacity: | 8 Kbits RAM |
| Read-Write features: | read, write and encrypt |
| Read-Write Endurance: | > 1.5 billion |
| Working Temperature: | -40 ℃~+85 ℃ |
| Read Endurance: | > 350 thousand times |
| Working Time: | >20 years |
Applications
- Library
- Swimming pool
- Sauna
- Outdoor work
- Bath center
- Humid working environment, etc.
Key Indicators
- Ultrasonic encapsulation chip and coil
- Material:ABS/PVC
- Protection Class: IP67
- Suitable temperature: -25°C to 70°C
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