Bob Zilla, Regarding the LockZilla product. Aside from the addition of a keyless remote, what exactly makes the LockZilla device superior to the original? Specifically, what exactly was the actual deficiency in the circuit? Did you improve the reliability of the device by replacing the relays with replacements of superior specification? Has the circuit been redesigned or is it simply a matter of component improvement? Have the switching transistors proved unreliable? Is there some inherent fault in the circuit design? What circuit component (s) actually fails? The circuit looks pretty straight-forward to me. Other than a sticking carbonized under-rated relay contact or the possibility of over-driving the switching transistors and subsequent failure of one of the diodes due to an over-current condition, what have you found to be the primary reason for the failure curve? I'm sorry to ask so many questions, but with a problem as potentially dangerous as this one, I would like to know as much as I can. Thanks, Rustproof