AVT2409 B

An improved version of the AVT2187 set. The introduction of modifications allows cooperation with a line length of several hundred meters. The amplifier used allows for high signal strength and the improved key switch guarantees full silence when there is no signal. The set will work perfectly well for eavesdroppers sleeping in their rooms, small children, it is also useful for monitoring eg a garage or store.
The device consists of two parts, connected by a two-wire cable. In the place you want to supervise, an electret microphone is installed, in the control room there is a base station.
Eavesdropping works in automatic mode - the listening session switches on automatically when there are any sounds in the supervised room. It is possible to smoothly adjust the trigger level.

The device is especially recommended for electronics - parents and people who want to "know what's on the grass"

Selected parameters of the set:

• electret microphone
• connecting line - two-wire connection
• power output 1-3 W (depending on the power supply)
• automatic work system
• adjusting the threshold of operation and volume
• power supply - 2 x 8-16 Vac
• in the set a printed circuit board, a set of elements and documentation
  
  Detailed description in
  EdW 3/00