Aeon Labs ZW088-A,Black,US,AL001 Aeotec Z-Wave Key Fob, Gen5, Black, Small 4 buttons, 8 scenes 50M greater range and faster communication and upgradeable product firmware Fit neatly onto the key ring Replaceable battery (lithium cell Cr2450 3 volt battery) Z-wave certification Number: zc10-14120003