ESL 5/15 can be compatible with each other, depending on the serial number on the lock. Serials numbers can be found on the inside of the keypad housing.
- ESL5 locks with serial numbers starting with a 5 (5#####) the correct replacement keypad part number is 0635365.
- ESL5 locks with serial numbers starting with a 7 (7#####) the correct replacement keypad part number is 0635367.
Please note that plugging the wrong keypad into an ESL5 or ESL15 can cause damage to the lock.
ESL 10/20 are compatible with each other, without any serial number consideration