Specifications

TM cards

Dallas 1990/1991

Dallas TM1990 card, adapts original Dallas chip, sealed by stainless steel completely   
Compatible with 1990A-F5
Working temperature: -40 to +80°C
Reading speed: <5m/s, depends on reset pulse
Passes both hardness and water tests (water: over 10 minutes in boiling water, still works well)
Customizable logos welcome
Plastic handles or plastic chain belts of different colors available

all brands and trademarks shown here are only for references