Master Lock's PulseCode Lock and Actuation Switch is a versatile access control system engineered with E-Lock technology, which allows the PulseCode system to operate without direct contact between switch and key. It provides security, access control and an audit trail that assists in detecting tampering, theft and tracing damages and losses. The actuation switch can engage or disengage ignitions, transmissions, fuel pumps, electric brakes or all at the same time.