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✔【100% WIRELESS, Easy Installation】No wire is needed to connect the doorbell and monitor. This system adopts 868mhz frequency for signal transmission. It doesn’t need WiFi to work. 868mhz frequency has better penetration performance in the current radio frequency. Its valid signal distance is up to 100m in open space(ATTENTION: no walls or no metal between doorbell and monitor).The actual signal performance depends on the usage environment.
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