Description
| 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 |
