This video shows how to change the code on KEYLEX 4000 series Mechanical Keyless Lock.
4000 series allows user to change the code easily from the keypad without removing the lock case from door.
KEYLEX is a high quality mechanical push-button lock offering maximum security and saving cost for entry/egress. A fully mechanical lock system not requiring electricity, no electrical wiring/battery required, eliminating issues and costs associated with installation, electrical malfunctions or battery failure/replacement.
More info: https://kenwa-america.com/
