A.C line direct connection type
Minute sound hearing micro transmitter by remote control
KRT-400TA

Outline
  • The remote control transmitter (KRT-400TA) is supplied power in direct connection with an electric light line so that no battery is required and it is available semipermanently once installed. It can be installed and hidden in a wall outlet or some electric apparatus.
  • The ((KRT-400TA) is the smallest and epoch-making transmitter in the world in which a device of voice transmitter and control signal receiver is built.
  • Only install the transmitter in setting the power supply switch "ON" at a place to catch sound. An electric wave does not always release and it begins to send wave upon receipt of instruction signal to "Start" from the remote control receiver (KRT-400R). Set the switch "OFF" on the receiver, then, stops to send wave automatically by which extra wave is saved.
  • The available distance is about 300 meters in use with an exclusive remote control receiver.
  • Since the installed remote control transmitter does not always send an electric wave, others cannot hear it, or it must have been discovered with a discovery equipment etc.
  • Although standard articles are only C channel, arbitrary frequency can be manufactured if it is between 399Mhz with in 3Mhz. It becomes a receiver and a set. It is a transmission-and-reception set and is the increase of price 40%. Time-for-delivery one month
Direction
  • When installing in the wall socket etc., it connects with metal portions, such as the root of an electric light line, by the clip code.
  • It becomes impossible to gather a small sound, if it is completely sealed when used by building in an electric product etc. Moreover, tone quality also becomes bad and plainness becomes remarkably bad. Since sound is gathered with a microphone, a microphone portion is made to adhere to the crevice between the exteriors of the apparatus made to build in. It fixes and installs with a gummed tape, a cellophane tape, etc.
  • A remote control receiver and a set use a remote control transmitter. In a standard article, an internal transmitter becomes only C channel [ one ]. If the power supply switch of a remote control receiver is put in, it will begin and for 3 seconds will send an instruction electric wave to the receiving part by the side of a remote control transmitter. The internal built-in receiver by the side of a remote control transmitter is operating a short time at intervals of 2 seconds, in order to save a battery. Therefore, sending an instruction electric wave only at the beginning which put in the power supply switch is continued for 2 seconds. Perception of it of the internal built-in receiver by the side of a remote control transmitter begins to send an electric wave. Although the oscillation electric wave by the side of transmission is henceforth disconnected at intervals of 4 minutes, the direction of a remote control receiver side will issue instructions of re-connection at an instant, if the electric wave by the side of transmission is disconnected. Therefore, unless the power supply switch by the side of a remote control receiver is cut, it can continue receiving continuously. If the power supply switch by the side of a remote control receiver is cut when stopping, dispatch of the electric wave by the side of a remote control transmitter will also go out automatically less than several minutes.
  • When carrying out automatic recording combining a commercial recorder, it is used by putting the recording code of remote control receiver attachment in the earphone terminal of a remote control receiver, and the external microphone terminal of a recorder. A receiver, a recorder, and cases are put together and it is made not to install. When used by sticking, in between, on both sides of paper, a cloth piece, etc., please carry out and insulate and install. Unless cases are insulated, it may not be recorded normally.
Specification of KRT-400TA
      Receiving part.
        Receiver (double superheterodyne system 1ST:10.7Mhz 2ND:455Khz).
        Received frequency for narrow-band FM C channels 399.030Mhz.
        Receiving sensitivity 0.3microV (-117dbm) S/N 20db.
        Consumption current About 0.4mA (at time of standby).
      Transmitting part.
        Narrow-band frequency modulation type.
        Transmitting oscillation frequency C channels ( 399.030Mhz).
        Maximum frequency deviation with in 0Khz.
        Consumption current 9mA.
        High frequency output 5mW.
        Sprias Less than [ -50db ].
        Frequency stability Below }5 ppm (-10 degree-C ~ 50 degree C).
      Remote controling part.
        Consumption current 0.5mA.
        Transmitting cutting timer About 4 minutes.
        Re-connect time Less than [ 50mS ].
      Power supply voltage A.C90V ~ 120V 50 ~ 60Hz or A.C200V ~ 240V 50~60Hz.
      Operating temperature -5 degrees C ~ 50 degree-C.
      Weight 32g.
      Outside size 14mmx73mmx26mm.
      Manufacture in the range of 398.5Mhz ~ 399.5Mhz is possible for a custom-made item (channel interval 20Khz).
Notes
  • When you attach this device in a direct electric light line, please take great care about the electric shock accident. In the case of electric appliances, please work after pulling out AC code. In the case of the wall socket box , once you drop a breaker, please work. When you install in the fluorescent light of a ceiling, please choose and attach the fewest portion of generation of heat. Electric noises (hum etc.) enter in the place to attach. When you attach, please receive and be sure to check.
  • Since the condensation internal built-in precision parts are carried out, please do not carry out usage which gives a shock.
  • Please do not attach a magnet. An electric wave output becomes extremely bad. It will stop returning, if it does not readjust even if it removes a magnet.