Secrui ‎M508+D017 Wireless Door Sensor Chime User Manual

Discover how to use the Secrui ‎M508+D017 Wireless Door Sensor Chime with this comprehensive user manual. Learn how to set up the door sensor and receiver, select from 58 tones, adjust volume levels, and more. Perfect for enhancing security in homes, offices, stores, and warehouses. Keep your loved ones and property safe with this easy-to-use wireless door chime.