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Tuya WiFsmart home automation Alexa Support 1080P Smart Doorbell Door With IP65 Waterproof Intercom Smart Security System, US $ 40 - 45 / Piece, Guangdong, China, REHENT Tuya Doorbell, RH-TD1 Wired Video Doorbell.Source from Shenzhen Rehent Technology Co., Ltd. on Waimaotong.com.