M1 non-contacting ic card hikvision, ds-k7m102-m; sensing frequency: 13.56mhz; memory capacity: 1024 bit; function: read and write; sensing distance: 0cm to 4cm; working temperature: -10oc to +50oc (14of to +122o f); dimensions (lxwxh): 26mm x 50mm x 4mm (1.02 x 1.97 x 0.16); material: pvc; pachet 25bucati; olishop.roa