User Manuals, Instructions and Guides for Beichenyu products.
Beichenyu 220728 Long Range Wireless Mailbox Alarm with Doorbell Sensors User Manual
Learn how to install and operate the 220728 Long Range Wireless Mailbox Alarm with Doorbell Sensors. Get instant notifications and choose from three mailbox reminder tones. Expandable and compatible with existing doorbell systems. Waterproof transmitter. From Shenzhen Beichenyu Technology Co.,Ltd.