Abstract: The remote controlled security device which can be controlled by a radiant energy transmitter so as to lock or unlock it, is mounted on the inside wall of a container and has a locking bar which is engageable with a locking plate that has an aligned opening for receiving locking bar of the security device. The locking bar can be moved by stepper motor from the locked to the unlocked position in response to actuation of the remote control transmitter to allow the door of the container to be locked or unlocked. There is also provided a key with an opening which can be inserted through the wall of the container to engage a projection which has the same shape as the opening in the key to allow the lock to be manually locked or unlocked.

Abstract: An improved locking device which has a body member with a cable which has one end attached to the body member and a second end of the cable which can be inserted into the body member in a first direction but which cannot be withdrawn in a second direction. An improved spiral spring biases a disc that rides on a ramp into engagement with the second end of the cable so as to lock it so it cannot be withdrawn from the body member, the coil spring provides a simple and efficient biasing device.