hidden listening device,voice detector,sound surveillance
The distance can up to: 300 to 500 metersThe required conversation can be heard simply by turning on the switch , since the frequency is fixed by the quartz oscillator Ultra-compact design .Both the transmitter and the receiver have been designed as ultra-compact units that offer; optimum performance. The small size of the specialist receiver is particularly useful it will even fit into the breast pocket of a business shirt Special frequencyBecause the units are locked onto a dedicated special frequency, there is no possibility of listening to the transmission with other receivers. Outstanding performance .The long range of the waves transmitted by this products outstrips than on all conventional wireless microphones, making it possible to pick up voices clearly even at distant locations. This unique system make it possible to listen to conversations at points A-B 2 by using transmitters A.B 2 in conjunction. Recordings Conversations can be recorded even while listening to them with the earphones. Simply connect the receiver to a portable pocket tape-recorder with a cord and operate the devices manually... even with htem in your pockets! (The size of tape jack is 3.5mm) Do not take off earphone, because the earphone cord serves as the antenna for this unit
Professional long range hidden listening device