Cabinet lock for use with programmable electronic key

A merchandise security device for a merchandise fixture that protects merchandise from theft, comprising:

• a lock housing configured to be affixed to the merchandise fixture, the lock housing comprising a lock mechanism that is movable between an unlocked configuration and a locked configuration or between the locked configuration and the unlocked configuration, the lock housing comprising an indicator for indicating a state of the lock mechanism;
• and
• an electronic key for transferring electrical power to operate the lock mechanism between the unlocked configuration and the locked configuration, wherein the indicator is configured to be energized in response to the lock mechanism receiving electrical power from the electronic key.

A method for protecting merchandise from theft, the method comprising:

• affixing a merchandise security device to a merchandise fixture, the merchandise security device comprising a lock mechanism;
• and
• activating an electronic key to transfer electrical power from an internal source of electrical power to the merchandise security device to operate the lock mechanism between an unlocked configuration and a locked configuration or between the locked configuration and the unlocked configuration, wherein the lock comprises an indicator for indicating a state of the lock mechanism, and wherein the indicator is configured to be energized in response to the lock mechanism receiving electrical power from the electronic key.