Patent ID: 7061399
Filing Date: 2006-06-13
Classification: G08C

Abstract:
1. An apparatus for remotely monitoring variables comprising: a) one or more independently powered remote monitoring devices having means for sensing variables coupled to a microprocessor for receiving and processing variable data and means for transmitting the variable data to a control device; b) a control device having a means for receiving variable data from the one or more remote monitoring devices, coupled to a microprocessor for processing variable data and means for transmitting data to the one or more remote monitoring devices; the one or more remote monitoring devices being momentarily activated for a period of time at programmed intervals, wherein during such momentary activation period the one or more remote monitoring devices transmit a beacon signal to the control device and/or further transmits up to 1 byte of any processed variable data from the and/or a previous momentary activation period, the one or more remote monitoring devices resuming a sleep mode after such transmission(s) and at the end of the momentary activation period, the momentary activation period being extendible by means of a signal transmission from the control device.