Shenzhen A. N. G Technology Co., Ltd.  

Product Name: Tracking Ibutton Key Ds 1990/TM1990/RW1990 Model NO.: RW1990 Product Name: RW1990A Ibutton Material: 304 Stainless Steel Dimension: 16.75*5.89mm Color: Red,Yellow,Green,Blue,Black,etc IC Type: TM Memory Card Chip: TM1990A-F5, RW 1990, TM1990 Printing: Sample Logo and Number Capacity: 64 Bit Serial Number Work Temperature: -40c~100c Application: Hotel Door Lock ,Sauna Key Card Trademark: ANG tech Transport Package: Individual Poly Bag, Shrink Wrap, Export Carton Specification: 16.25*5.89MM Origin: Made in China HS Code: 8523521000 Product Description Tracking IButton DS1990/TM1990/RW1990Stainless steel package with su304-0.3,rugged, never rust, corrosion; resistant to heat;Anti-variant; sealing strong; for security patrol, sauna door locks, electronic door locks,door intercom, card systems, identification, banking,Communications, rail transportation, transportation, and so many fields.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 the 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(long=1, short=0). Due to the range of witching impedances is 1-10,000, the resistances of the contact points will not affect the identification of the digital signals.Dallas TM1990 card, adapts Original chip, sealed by stainless steel completely Compatible with 1990A-F5Working temperature: -40 to +80centigrade.Reading speed: <5m/s, depends on reset pulsePasses both hardness and water tests (water: over 10 minutes in boiling water, still works well)Customizable logos welcomePlastic handles or plastic chain belts of different colors availableAll brands and trademarks shown here are only for referenceApplications/UsesAccess ControlInventory ControlTool ManagementWork-in-Progress TrackingShipping:1. By door to door express, like DHL,UPS,TNT or Fedex(generally 3-5 days).2. By Air(generally 5-7 working days), cheaper, but need pick up the goods by yourself at the airport.3. By sea(generally 20-30 working days, the cheapest, nice option for big volume goods.(We will suggest the best option after comparing the cost and shipping times, and we have forwarder or you can use your own agent.)Payment:1. 50-100% prepay, and full payment before shipping.2. We will show you the product before balance payment or shippment.If you're interest and there are any question,just send me a inquire below !!! We willreply within 24 hours.Have a good day:)