PulseCode™ Locks
PulseCode™ locks from Master Lock are electronic lock solutions engineered with distinctive E-Lock™ technology. PulseCode locks are opened and closed via a unique knock pattern transmitted through the locked barrier from a hand held transmitter/receiver to a secure, encrypted Master Lock mechanism.

The timing intervals between pulses contain the lock's encrypted opening code, which is transmitted by the PulseCode key held against a solid surface. The lock listens to the code and opens when it hears the correct sequence.

The 16-digit, randomly encrypted code allows for billions of possible code combinations. This makes PulseCode extremely secure, because it never uses the same code twice. So it's impossible to imitate the key - even by recording the code.

The E-Lock technology behind PulseCode Master Locks enables the system to operate without direct contact between the lock and PulseCode key. In fact, there's no keyhole or conventional key at all. Instead, E-Lock technology uses the encrypted sequence of mechanical pulses, transmitted by the PulseCode key held against a solid surface. The opening code passes straight through to the lock - even through solid metal, wood or glass. If the lock hears the correct code, it opens.