Assa Abloy, Aperio BLE Online single metal cylinder 17mm button V3, cylinder length 30x10mm, C100-Euro Profile, RFID single-sided, iCLASS / ISO 14443B, iCLASS Seos, MIFARE Classic, MIFARE Plus, MIFARE DESFire EV1, LEGIC AdvantRFID technology. Aperio the tool needed to put the Batteries, ref. no. 40020127