An electromechanical lock includes a lock body and a locking mechanism disposed in the lock body. The locking mechanism includes a blocker, first and second cams, and a motor. The blocker is movable between a locked position and an unlocked position. The first cam is rotatable about a first axis between a blocker obstructing position and a blocker clearance position. The second cam is rotatable about a second axis, spaced apart from the first axis, to move the first cam between the blocker obstructing position and the blocker clearance position. The motor is coupled to the second cam to rotate the second cam in response to an electrical authorization signal supplied to the motor.