There may be several reasons.
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1, check whether the millet smart switch is too far away from the router, resulting in unstable wifi signal reception and often offline, the switch can be solved by moving close to the router.
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2, check whether there is a problem with the Settings of the router resulting in the switch often offline, generally restart the router can solve the problem, if necessary, you can reset the router to solve.
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3, the network server connected to the router is unstable, resulting in frequent offline, generally need to contact the local network service provider for troubleshooting and repair in order to solve the problem.
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4, millet smart switch itself has a firmware problem that often leads to offline, you can according to the millet official website tutorial to brush the firmware to solve.
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5, Millet smart switch hardware failure often lead to offline, such as wireless network module failure, antenna failure, chip failure, etc., it is recommended to contact millet after-sales maintenance
You can check the electric edge, if the electric edge is normal, replace the remote control switch.
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It may also be that the wiring remote control switch is used for a period of time, the internal battery voltage drop caused by the switch is not working, update the same specification model of the battery can be, there is a weak light is mainly caused by the neutral line and the fire line, the replacement will not have this phenomenon.