







🔔 Elevate your entry game with style and sound that never quits!
The SECRUI M520+F55 is a sleek, waterproof wireless doorbell featuring 58 ringtones, 5 volume levels, and an impressive 3-year battery life. Designed for effortless installation with no wiring required, it supports flexible configurations of multiple buttons and receivers, making it perfect for modern homes seeking reliable, customizable door alerts.









| Manufacturer | SECRUI |
| Part number | M520 |
| Item Weight | 9.07 g |
| Batteries | 1 CR2032 batteries required. (included) |
| Item model number | M520 F55 |
| Size | 1 Packungen |
| Color | black |
| Material | ABS plastic |
| Pattern | Simple design |
| Shape | Square |
| Item thickness | 1.4 Inches |
| Power source type | AC and battery operated |
| Voltage | 120 Volts |
| Installation Method | Self-adhesive and screw-in |
| Item Package Quantity | 1 |
| Temperature Range | -4-140 Degrees Fahrenheit |
| Noise Level | 120 Decibels |
| Extension Length | 2.6 Inches |
| Hose Length | 2.5 Inches |
| light-source-type | LED |
| Number Of Basins | 1 |
| Number of Holes | 1 |
| Blade Length | 2.5 Inches |
| Speed Rating | Memory function: LED indicator |
| Cutting Diameter | 2.5 Inches |
| Measurement System | English/Standard |
| Measurement Accuracy | 1 mm |
| Plug Format | A- US style |
| Special Features | Adjustable volume Optional ringtone |
| Specific uses | Wireless Doorbell for Home/Classroom Doorbell |
| Included components | 1 × transmitter (battery included), 1 × plug-in receiver, 1 × tape, 2 × screw, 2 × anchor, 1 × user manual (may not be in English) Not in English) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Manganese Dioxide |
| tech_spec_battery_description_toys | CR2032 |
| Battery life | 3 years |
| Item diameter | 2.5 Inches |
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