Abstract: A timelock for bank vault doors and the like is disclosed. The disclosed timelock includes three electronic interval timing devices, each interval timing device including a bank of thumbwheel switches on which the desired minimum interval from the arming of the timelock to the reopening of the bank vault door or the like is retained from day to day unless manually changed. All three of the electronic interval timing devices are started by a switch operated by the timelock arming lever. Each electronic interval timing device includes a numerical display device on which the preset delay interval retained in its bank of thumbwheel switches is displayed. Each electronic interval timing device also includes a numerical display on which the unexpired delay duration is displayed in numerical form whenever that interval timing device is operating. Each electronic interval timing device also includes an output solenoid and means for energizing the output solenoid for a predetermined period (e.g.