| MB 90K EMITTER | |
| NUMBER DISPLAY | 4-bit 0.56 red LED display |
| CALLING MODE | Calling number mode and pages mode |
| FREQUENCY | 433.92MHz |
| POWER SUPPLY | 5V500mA |
| HUMIDITY | 10 – 80 % |
| TEMPERATURE | 0 – 45 ˚ |
| DIMENSION | 15cmx10cmx3.5cm |
| MB 90D RECEIVER | |
| POWER INPUT | 12V1A |
| MODE | Voice broadcast number |
| FREQUENCY | 433/315 MHz |
| RANGE | 150 m |
| DIMENSION | 42cmx12cmx3cm |
