Poacher presence detecting and external private domain e.g. water domain, protecting system, has sensors and transceiver that are weatherproof, where transceiver has GSM transmitter to transmit message to user when it receives AM signal

摘要

The system has trigger sensors (A-D), and a transceiver (4) including a radio receiver and a GSM transmitter. An AM radio signal (1) is sent in a unilateral manner to the transceiver. The transmitter directly transmits a SMS type short message or VOCAL message to a mobile telephone (7) of a user. The sensors and the transceiver include internal batteries (E) and antennas and are weathertight.