Abstract: A sensing device, comprising: a first sensor, directed vertically down in relation to an identified orientation of the sensing device; at least one second sensor, directed diagonally forward in relation to the identified orientation; at least one hardware processor, electrically connected to the first sensor and the second sensor adapted to: receive at least one first signal from the first sensor or the second sensor indicating a person's presence in a monitored premises; and until receiving at least one second signal from the first sensor or the second sensor indicating an absence of the person from the monitored premises: during a predetermined delay time after receiving the first signal, determine whether one or more expected signals are received from the first sensor or the second sensor; and determine an alarm system operation to be taken subject to the one or more expected signals not being received, according to the determination.

Abstract: A portable emergency alert device, comprising: a sensor for receiving an indication of an emergency situation of a user; a first transmitter for transmitting the alert to an emergency center via a stationary relay device; and a second transmitter for transmitting the alert to the emergency center via a portable relay device; a processor for processing said indication to instruct transmission of the alert by at least one of the a first transmitter and the second transmitter.

Abstract: A sensor unit comprising; a magnetic sensor adapted to detect a magnetic field; a light source adapted to transmit a radiation having a signature; a reflecting member for reflecting radiation emitted by the light source; a radiation sensor adapted to detect radiation reflected by the reflecting member; a controller adapted to generate a signal indicative of a security breach when the magnetic field is detected by the magnetic sensor and the signature is not identified in the radiation received by the radiation sensor.

Abstract: A monitoring system comprising at least one audio sensing device, at least one audio signal processor adapted to perform audio processing electrically connected to the audio sensing device, a central hardware processor adapted to receive digital electronic information from the audio signal processor, an electronic communication interface adapted to deliver the digital electronic information between the audio signal processor and the central hardware processor and a dry contact electrically connected to the electronic communication interface and electrically connected to the audio signal processor. The audio sensing device is configured to deliver audio signals to the audio signal processor the audio signal processor processes the audio signals by applying audio processing algorithms and the audio signal processor delivers an electric current to the dry contact upon recognition of a predetermined audio event within the audio signals.

Abstract: A system of identifying a person's identity in a monitored site, comprising communication interface(s) for communicating with motion sensor(s) each monitoring one of a plurality of monitored spaces of a monitored site, RF receiver(s), each having a reception coverage area overlapping with one of the monitored spaces and transmitter(s) for transmitting a request message, a program store storing a code and processor(s) for executing code to, receive from a detecting sensor a presence indication in a detecting space of the monitored spaces, instruct the transmitter(s) to transmit a request message in the monitored site following the indication reception and estimate an identity of a person by analyzing a unique identification signal captured by RF receiver(s) having reception coverage area that overlaps with the detecting space. The unique identification signal is transmitted by an identification device of an associated person in response to the request message reception.

Abstract: An alarm system comprising at least one server and at least one onsite unit. The onsite unit comprising at least one audio sensor adapted to capture audio signals, a hardware memory, at least one processor electrically coupled to the audio sensor, and an onsite unit network interface adapted to transmit a message comprising at least some of the recorded audio signals to the server via a network in response to the detected presence. The hardware processor is adapted to continuously recording the audio signals in the hardware memory, and performing an audio analysis of the audio signals for detecting a presence of predefined oral expression. The server comprising a server data network interface adapted to receive the message, at least one central processor adapted to instruct a presentation of audio signals to a user, and a server communication interface adapted to open a voice communication channel with the onsite unit.