The AT-2450S 2.4G standard card is an active 2.45G electronic tag independently developed by our company. This active electronic tag enables long-distance identification and positioning, boasts a battery life of 2-3 years, and features easy battery replacement. Its main features include long reading distance and the ability to solve the problem of strong signal shielding from car window films. Long Distance: Due to active transmission, the reading distance is long. Security: Encryption algorithms and authentication ensure data security. Directionality: Enables both directional and non-directional identification. High Reliability: -30℃~70℃, shock resistant. High Anti-interference: Completely solves the problem of stubborn car window films; communication uses encryption algorithms, providing extremely strong anti-interference capabilities. Thin: Special internal design, thickness only 5mm.