AVT2821 A +

The system is used to inform that a person being under the care of a "radio guard" has left the area intended for it. The set is used during the care of the elderly, the sick (eg with memory loss) and children. It consists of two main cooperating elements - a transmitter and a receiver. Both have small dimensions so that you can carry them in your pocket.
The operation of the set is simple, - from time to time the transmitter sends a corresponding, encoded signal to the receiver. If this one is in range, after receiving the signal, it sends a feedback signal confirming the reception. In this way, the transmitter "knows" whether the other part is in a specific area or already outside it. In the latter case, the alarm signaling is activated.
The radio track uses ready-made, factory-tuned modules - complete low power transceivers. They have been supplemented with processors that perform all control and control functions.

The device is particularly recommended when it is necessary to supervise the presence of selected persons

Selected parameters:

• system of two transmitter / receiver devices cooperating with each other
• exit signal indication - sound, piezo transducers
• possibility of connecting a larger signaling device
• regulation of the operating range of the device - step, jumpers
• four levels of transmit power
• use of ready TLX905 transmitting modules
• possibility of powering the transmitter from the mains adapter or battery
• power supply - 9 Vdc (transmitter), 3.3V (receiver)
• in the set, printed circuit boards, programmed layouts and documentation
  
  Detailed description in
  EdW 4/07