Sequentially operated modules

摘要: Method, modules and a system formed by connecting the for controlling payloads are disclosed. An activation signal is propagated in from module to connected it. Upon receiving an signal, (after pre-set or random delay) activates payload associated with it, transmits another one more The initiated master including user activated switch producing signal. can be direction last module, carried bi-directionally allowing two way propagation, using which revert of propagation direction. A may individually powered internal power source such as battery, external AC power. use remote powering wherein few all same single point. over dedicated wires concurrently conductors carrying visual audible signaling device, integrated within source, involve randomness its delay, control activation.