An alarm system having a portable body carried controller that wireless communicates with multiple remote base units each having a wireless communications system configured for ultralow power mode operation where the communications system is put in sleep mode greater than one half packet transmission time but no greater than preamble transmission time to conserve battery life. Controller has multiple LED-equipped buttons assigned to corresponding base units during pairing which are respectively activated when the corresponding base unit assigned thereto alarms upon occurrence of a sensor detection event. Pressing the button can turn off the LED alarm, can poll the assigned base unit, and can task the assigned base unit including to operate in flashlight mode where base unit is lit up. A preferred base unit has an enclosure with legs that form reversible pedestals upon which base unit can be placed.

An alarm system having a portable body carried controller that wireless communicates with multiple remote base units each having a wireless communications system configured for ultralow power mode operation where the communications system is put in sleep mode greater than one half packet transmission time but no greater than preamble transmission time to conserve battery life. Controller has multiple LED-equipped buttons assigned to corresponding base units during pairing which are respectively activated when the corresponding base unit assigned thereto alarms upon occurrence of a sensor detection event. Pressing the button can turn off the LED alarm, can poll the assigned base unit, and can task the assigned base unit including to operate in flashlight mode where base unit is lit up. A preferred base unit has an enclosure with legs that form reversible pedestals upon which base unit can be placed.

A portable measuring device having: a measuring apparatus comprising a logic circuit and a reader, an accessory interchangeably connectable to the measuring apparatus and storing individual metrology information relative to the accessory in a form compatible with the reader, wherein the measuring apparatus is configured, while it is connected to the accessory, to: read the individual calibration information with the reader; acquire, using the accessory, a signal dependent from a metrology-related property of an object; convert the signal into a measure value in the logic circuit, using the individual metrology information of the accessory; output the measure value.

A portable measuring device having: a measuring apparatus comprising a logic circuit and a reader, an accessory interchangeably connectable to the measuring apparatus and storing individual metrology information relative to the accessory in a form compatible with the reader, wherein the measuring apparatus is configured, while it is connected to the accessory, to: read the individual calibration information with the reader; acquire, using the accessory, a signal dependent from a metrology-related property of an object; convert the signal into a measure value in the logic circuit, using the individual metrology information of the accessory; output the measure value.

A first roadside network unit is provided. A first transceiver for a first wireless communication network is designed to receive data from a second wireless network unit on a first channel of the first wireless communication network. A processor is designed to provide the received data to a second transceiver for transmission to a third roadside network unit. The second transceiver for a second wireless communication network is designed to transmit the data provided by the processor to the third roadside network unit on a second channel of the second communication network.

A first roadside network unit is provided. A first transceiver for a first wireless communication network is designed to receive data from a second wireless network unit on a first channel of the first wireless communication network. A processor is designed to provide the received data to a second transceiver for transmission to a third roadside network unit. The second transceiver for a second wireless communication network is designed to transmit the data provided by the processor to the third roadside network unit on a second channel of the second communication network.

The present disclosure relates to a location determination system that includes acoustic transmitting devices (104), location tags (112), and a wireless mesh network (106), where the wireless mesh network uses battery-powered devices. A location tag receives acoustic signals (e.g., ultrasound signals) from an acoustic transmitting device. Clocks from members of the wireless mesh network are synchronized by observation of clock pairings, each clock pair formed by respective clocks in a transmitting device that transmits a message and a receiving device that receives the message. By analyzing the observed clock pairings, a best fit between the clock pairings may be determined. After selecting a reference clock, an acoustic transmission schedule may be propagated to the respective acoustic transmitting device.

The present disclosure relates to a location determination system that includes acoustic transmitting devices (104), location tags (112), and a wireless mesh network (106), where the wireless mesh network uses battery-powered devices. A location tag receives acoustic signals (e.g., ultrasound signals) from an acoustic transmitting device. Clocks from members of the wireless mesh network are synchronized by observation of clock pairings, each clock pair formed by respective clocks in a transmitting device that transmits a message and a receiving device that receives the message. By analyzing the observed clock pairings, a best fit between the clock pairings may be determined. After selecting a reference clock, an acoustic transmission schedule may be propagated to the respective acoustic transmitting device.

A method for operating a wireless control device includes the starting up of a control circuit following the actuation, by a user, of a control unit coupled to an energy harvesting device to recharge an energy reserve which electrically powers the control device; the sending of a control message including a control command; the comparison of the elapsed time since the starting up of the control circuit with a first threshold value; when the elapsed time is greater than or equal to the first threshold value, the sending of a pairing request message to the electronic unit.

A sensing system includes a wireless sensor configured to detect a current sensed value of an environmental condition, the wireless sensor programmed with a delta threshold; a thermostat in communication with the wireless sensor; wherein, when the current sensed value differs from a prior transmitted sensed value by more than the delta threshold, the wireless sensor transmits the current sensed value to the thermostat; wherein, when the current sensed value differs from the prior transmitted sensed value by less than the delta threshold, the wireless sensor stores the current sensed value as a stored sensed value.