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Both LITMIS™ and R-NET™ are both smart sensor based wireless monitoring and control technologies that utilize similar hardware. And both give real-time data on conditions.

Pollers
Pollers: Small, long-life battery powered microprocessor controlled RF
transmitters that are placed at various sites around a building such as doorways, and that each send out a coded polling signal to Transponders that are in its vicinity, informing them of its location and also capable of providing other information and instructions. Alternatively, they can be attached to a piece of equipment, a person such as a child, or an object that needs to be monitored, located and/or tracked. It may also include a variety of sensors or be attached to sensors in order to transmit selected data to Transponders or directly to the Readers.
Poller:
Size: Typically between that of a watch and a Key Fob (1” x 1” x 0.2”). Range:
Selectable from 4’ to 20’
Power: Battery powered, Lithium or 3.4 volt wall adaptor.
Frequency: Low power transmitter, unlicensed FCC Part 15, choice of 303MHz, 433MHz, 915MHz, etc.
Module

Transponders
Transponders: Enhanced longer range, transceiver versions of the Poller which are
attached to the equipment, item or person being tracked. These transponders, which provide the option of adding various other sensors and condition indicators, send their location, status and data information to a central Reader, either on receiving a Poller’s signal or when any change of status occurs at either the Poller or the Transponder. If the Poller is attached to the moving person or item, the Transponder would be at a fixed location and it would provide the location information along with the Poller’s item/person identification and data on any parameters that are being monitored.
Transponder:
Size is typically about twice that of a Poller (1” x 2” x 0.2”). Range to Reader from 20’ to over 1000’
Power: Battery powered, Lithium or 3.4 volt wall adaptor.
Frequency: LP transmitter/receiver, unlicensed FCC Part 15, choice of 303MHz, 433MHz, 915MHz, etc.
Repeater

Readers
Readers: Long range (200 to 800 feet depending on antenna choice) transceivers with
the ability to receive and interpret the data sent from any Transponder (and/or Pollers) and then forwarding this information by wired or wireless communication to a PC, PDA, or other computer, thus providing immediate knowledge of the location of each person or piece of tracked equipment and any other data related to the installation equipment, item, person or the immediate location being passed or entered.
Reader:
Size is dependant on the form of communication to the database (3” x 4” x 2” to 5” x 5” x 4”)
Power: Typically 5V Wall transformer. Range to Information Center: Local to Global depending on mode.
Frequency: Low power Receiver, unlicensed FCC Part 15, choice of 303MHz, 433MHz, 915MHz, etc.
Interface: RS232/USB to PC, Wired LAN or 802.11WLAN, Cell or Satellite Modem.
Reader

Software: Applications software that can be used in any computer interfaced to the Reader and it can present a choice of displays including a list of people or items being tracked, their location, whether the situation is an emergency or not, even associations between items and/or people can be identified. Other information obtained from sensors on the Transponders and/or Repeater can also be displayed.

Other Options:
The Transponder and/or Repeater can be interfaced to a variety of sensors with analog, digital or multiplexed input, and can also have keypads for manually entered information.

The Reader can be implemented as a PCMCIA card for use with a PDA or a PCB for integration into a cell phone.