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Haichen Electric Appliance Firm 15yr.
Contacts:林树平 Chat
Mobile:86-18758931856
E-mail:whyun5366@sina.com
Receiver: Plug-in voltage power supply
Usage: After installing the battery, if you want to select a ringtone, please press the sound selection button on the receiver, and press it once to change a ringtone.
Installation and use: Transmitter (button): A 12V23A small battery is supplied, and the battery installation requires a cross-shaped screwdriver to open the cover. It is equipped with double-sided adhesive, which can be directly stuck on the door of the security door. The cover has a reserved screw hole, which can be fixed to the wall.
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