RW1990 read and writable Touch Memory Key ibutton compatible with DS1990A-F5 (pack of 5)

• RW1990-f5 can change the code, copy,
• 64K of memory can read and write "IButton" ,
• Primarily used in some countries Russia, Europe and the United States Turkey and the West, 
• Material: su304-0.3 Stainless Steel ,
• Size: 17.35mm (diameter) × 6.00mm (height) ,
• Operating temperature: -40 ° C to +85 ° ,
• Waterproof high-temperature, high sensitivity

Application:

or security patrol, sauna door locks,electronic door locks,