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Portable All Remote Controls Jammer (315/433/868MHz) , Mini Handheld Car Key Jammer  RC03A signal monitor Product introduction: This product is a high power remote control wireless signals transmitter. Within a certain range, wireless signals of the same frequency can be shielded and used specifically for certain occasions that use radio devices for cheating,remote control electronics，remote weighbridges and other cheating, examination rooms, hotels, conferences, etc. making cheating wireless signals invalid. The factory frequency (default) is set to 315MHz,434MHz,868MHz) Other frequencies can also be customized according to customer requirements.   Parameter : Operating voltage: DC9V (built-in rechargeable lithium battery(1600mAh) Operating current: 150mA (three frequencies) Operating frequency:315MHz,434MHz,868MHz(ASK),315MHz,434MHz,868 MHz(FSK) Coverage radius: 30-100M Dimensions: 130*130*35MM (including antenna) Power adapter: DC9V/1A Colour: Black Material: ABS   Instructions: 1.Open the package and screw the instrument antenna to the antenna socket on the back of the instrument. Tighten to prevent abnormal operation. 2.You need to charge for 2-3 hours before you can use it. The factory power of the product is only about 50%. (Low battery will directly affect the use of results) 3.Press the front green power switch. The blue light is on. The monitor emits 868MHz wireless signal. That is, press the front green power switch again, the blue indicator turns off, and the monitor stops working. Press the front red power switch, the red light is on, the monitor emits 315MHz, 434MHz wireless signal. That is, press the front red power switch again, the red indicator will turn off and the monitor will stop working. 4.Frequency default ANT1 is 315MHz, ANT2 is 434MHz,ANT3 is 868MHz, (from left to right)   Precautions: 1.Never use a non-dedicated power adapter to plug into the power input. 2.There is danger of electricity in the host, please do not open the back cover to avoid electric shock and affect the warranty. 3.Turn off the power and unplug the power plug when you are not using it for a long time or when you are away for a long time. 4.Please use in a suitable shielded environment, so as not to affect the use of effects. 5.Avoid exposure, rain, water droplets, long-term exposure to high temperature and humidity. 6.The effective range of the instrument is a circular area centered on the main unit.Ok, when using it, be careful to select the correct position of the instrument to avoid blind corners. 7.This product is a sensitive instrument for remote control products. It will shield the remote control signals such as electric cars, automobiles, remote control doors, access control, etc. Please use it rationally.    

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