Monitoring device for small electronic appliance such as mobile phone, has appliance communicating with transceiver of small device designed as monitor carried by person

摘要

A device for monitoring and protecting small electronic appliances from loss consists essentially of a power-saving RF link with freely accessible frequencies, in which the small electronic appliance is provided with a transceiver supplied via a power source for communicating with a transceiver of another appliance. The appliance communicating with the transceiver of the small appliance (1) is designed as a monitoring device (2) carried by a person, and which releases a signal when the range of the RF link is exceeded.