This is RW1990 chip that is rewriteable by suitable reader writer.
Material make: su304-0.3 stainless steel
The absolute source material is a high temperature resin , excellent sealing performance, anti-aging, resistance to heat; internal support spring pieces, made ??of stainless steel manufacturing, resistant variants.
100% of the high and low temperature and watertight, vibration, and electrical characteristics of the test; surface clean and smooth; internal chip COB technology manufacture of high-quality gold-plated plate and high integration.
100 pieces samples with wall mount.
Relevant technical knowledge for sharing:
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