The Mini transmitter operates on 1 x 3-volt battery (Size CR1 2032) in a suitable for the socket size. Use of Duracel products is preferred. The batteries are placed so that the minus fits in the suspension and the plus – in the flat side.
Do not place the Mini transmitter near by big metal objects. Do not place it near computers, TV sets or other electrical devices too. Best places to put it are behind lockers or furniture.
The microphone is sensitive enough to transmit all noises from the supervised area. No approachment to the noise source is needed.
The antenna should be set straight, use sticky tape to fix it. After installation the device should not be touched in order to avoid frequency deviations.
Turn on the receiver, shift to n-FM ( FM ) and search the 420 MHz - 450 MHz area. On a certain point (approx. 433,850 MHz) you will hear a whistle or background noises. Now you should leave the room and readjust the receiver if needed.
Under best circumstances the reception varies up to 1000 m.
Under worst circumstances the reception doesn’t fall under 100m.
If there are no mechanical damages on the device, it will be replaced even after years. You can obtain the address on telephone number 0049172-5337686 or 00359899088222. You can also call that number in case of any technical questions or see this.