- Model Number: RW1990
- Origin: Mainland China
- Name: Intercome key
- Model: RW1990, RW1990-F5
- Key Feature: Reading and Writing
- Material: Stainless steel, ABS plastic
- Memory: 64 bits
- Color: Black, Red, Blue, Green, Yellow, Purple
- Package: 10Pcs
- Copy: DS1990A/TM1990A
10 Pcs/Lot RW1990 Universal Intercome Key iButton Key Touch Memory with Handle
Chip Type: RW1990
RW1990 function:
1.RW1990 ibutton
2. Low Cost
3.Waterproof
4. Rewritable, DS1990A and TM1990A iButton,
5. Can copy, RW1990
Technical parameters:
*Dallas Encryption
*Breakdown coefficient: 1/100,000
*Serial Number: Global 64-bit numbers only
*System logic: 64-bit contact protection
*Memory: 8 KB RAM
*Inductive Type: Touch
*R/W and encryption
*B/W times: 1500000000
*Operating Temperature: -40~85
*Lifetime:>20 years
*Dimensions:54*20 mm
*Weight: 4g/pcs
*Parcel: 10Pcs RW1990 keys
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