Item model number | M520+F55 |
Battery Cell Type | Lithium Manganese Dioxide |
Power Source | AC & Battery-Powered |
Pattern | Simple design |
Performance Description | MEMORY FUNCTION ENERGY-SAYING LED INDICATOR |
Country of Origin | China |
Switch Style | Push button |
Batteries Included? | Yes |
Average Battery Life | 3 years |
Usage | Wireless Doorbells for Home / Classroom Doorbell |