Time-lapse recordingreproducing system and method for recordingreproducing audio signals are provided. The keypad comprises multiple security mechanisms to prevent tampering to the device, and thus access to users’ private information. Also, each of the charge storing patterns includes a plurality of horizontal segments, each interposed between vertically adjacent ones of the electrodes. The clear channel waiting time may be specified by a network master device as part of a network connection process and the transmissions within the channel outside of a device’s designated time slot may be accommodated after all regularly scheduled transmissions within the channel during a network frame period have been completed. A method of preparing a catalyst composition that comprises mixing an over flocculated molecular sieve and optionally, a phosphorous compound and, optionally, a non-over flocculated molecular sieve.