CyberLock
CyberKey Air
The CyberKey Air is a programmable smart key that can be uploaded with key-holder schedules and permissions for accessing CyberLock electronic cylinders. The battery from the key energizes the electronics within a CyberLock cylinder allowing for locks to be installed virtually anywhere without power or wiring. The CyberKey Air is Wi-Fi enabled, allowing for wireless key programming of access schedules and permissions as well as real-time tracking and reporting of access events.
https://www.cyberlock.com/cyberkeys.html