| Modulation | spread spectrum |
| Transmitter output power | ≦10dBm/10kHz (load: 10Ω) |
| Receiver input power (total power of receivable signals) | ≦-10dBm (terminated by 10Ω at receiveing end.) |
| Output impedance | 10Ω |
| Input impedance | ≧120Ω |
| Signal bandwidth | 10k -- 450kHz |
| Data rate (as a guideline) | ≦9600 bps |