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Qniglo Multi-Channel Long-Range FM Wireless Intercom System for Home and Office Features: The standard signal scope is 1800 feet(600M). The concrete scope is determined by the environment where the device is located. The receiving distance is farther in an open field, up to 1-3KM, while the scope may be narrow in dense cities or places with dense hindrances. Please make adjustment and test according to the concrete environment in actual use. The device placed near a window or open field has a stronger receiving capacity. 1.ANT (antennae): Receiving and emitting FM wireless signal. 2.MIC: Talk to MIC 5-10cm away from it with normal volume to talk. 3.DC+5V power socket: DC power interface, with rated current being 5V 1A. 4. DIGITAL CODE（A/B/C）：It can reduce external interference by changing different digital code. Note: CODE keys are on the back of the device and beside power socket. 5.0-9 channel number: This is used to set a channel of the device, and you need to set the channel as the same with the device which you want to talk with. Which channel number lights blue indicate the channel number of the device. 6.VOL+/VOL-: increase or decrease volume, you can set a comfortable voice by VOL+/VOL-. 7.GROUP（Group-Call Function）: This is used to talk with all devices in the intercom system, even the device in different channel code. 8.CALL: This is used to call the device with the same channel code. 9.VOX （Voice Operated Exchange）: When you set VOX function in one device, the voice information will automatically send to another device with the same channel code. It will work all the time. 10.TALK：Press this key and indicator become red. After talking, release the key, and indicator becomes OFF, the voice information is being sent out. Package Includes: 2*Wireless Intercom Stations 2*AC Power Adapters 1*User Manual
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