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1.1 use safety
Please ensure that:
1.2.1 the frequency of the remote control system is divided into 300 MHz, 400 MHz and 433.92 MHz (depending on the specific model). The FM mode is often called FM. Compared with the ordinary am (amplitude modulator), the FM mode is not easy to be disturbed by the charged surface, computer, motor, etc.
1.2.2 the placement of objects between transmitter and receiver antennas, especially large metal objects (such as steel bars in concrete walls), can affect the remote control distance in an unpredictable way, which mainly depends on how the wireless signal is distributed and transmitted.
1.2.3 adjacent wireless transmitters using the same frequency also affect the remote control distance, which is difficult to give a comprehensive suggestion. It is best to ensure that the visibility of the transmitter and receiver is very good in order to receive the signal ideally.
1.2.4 the normal remote control radius in the environment without interference is about 50-100m.
1.3 instructions for use
1.3.1 the handheld remote control transmitter adopts 2 or 3 No. 5 1.5V alkaline dry batteries. (depending on model)
1.3.2 when the hand-held remote control transmitter acts (a red indicator light of the transmitter will flash continuously) but the receiver cannot receive the signal or the remote control distance is too close, it indicates that the battery of the transmitter is low voltage. Please replace the battery immediately, otherwise the remote control cannot operate normally.
1.3.3 the transmitter and receiver have registered the code before leaving the factory. Do not change the system switch and password switch on the transmitter at will, and do not re register the code by yourself, because this will cause the control disorder of the automatic control system, resulting in unpredictable personal injury and equipment damage.