Description
| MB 55D Display | |
| Frequency | 433.92MHz/315MHz |
| Voltage | 12V |
| Capacity | 255 PCS of transmitter |
| Number | 0001 – 9999 |
| Dimension | 200 mm (w) x 130 mm (h) x 30 mm (d) |
| MBB2 Call Button | |
| Key | Call |
| Function | 100% water resistant |
MB55D & MBB5-B-Call Bell System
