1 using the wireless transmitting and receiving technology, without any charges, the battery can be used directly. 2 the use of external environmental protection type lithium battery and 9V battery. After use can be removed at any time so as to avoid unnecessary waste battery. 4 emitted from the emitter to achieve the best results.Open to straight-line distance of up to 500 meters or more, the situation is different neighborhoods as the. Building up to a distance of about 50-300 meters. 5 dedicated highly sensitive receiver frequency is not within the scope of the public, the other device can not receive a strong confidentiality. First, the emitter connected to a 9V battery, and then straighten the transmitter antenna (ie black cord) the place where you need to listen. Open the rear cover on the receiver 3.7v lithium battery, put on headphones to turn on the power switch.
Adjust the channel on the receiver adjustment button until the received signal sounds best so far. Tone can be adjusted according to the size of normal use.Specifications: Receiver Size: 788mm × 500mm × 165mm. Receiver Weight: 53g (with battery) Receiver Operating voltage: 3.7V Receiver operating current :20-30ma Transmitter Size: 270mm × 195mm × 150mm. Transmitter Weight: 10g (without battery) Emitter Voltage: 9V Emitter current :15-40ma. Accessories: 1x F-908 is a receiver.
1x Connect a USB charging cable. Because other country no e-packet services , item will send from China via Singapore Post. We wish to build a long time friendly partner relationship with you.
We appreciate it if you can leave us a good feedback. The item "Wireless transmitter receiver Audio Listening Device Ear sound record spy BUG" is in sale since Wednesday, January 1, 2020. This item is in the category "Consumer Electronics\Other Consumer Electronics".The seller is "sqk1010" and is located in , . This item can be shipped worldwide.