È dotato di sistema anti-interferenza per il funzionamento simultaneo di diverse unità. Con una distanza di ricezione massima di 80 m, dispone di "sync" a infrarossi per trasmettere la frequenza ai trasmettitori. Uscita audio jack sbilanciata e XLR bilanciata.
Technical characteristics| Reception method | UHF Dual Diversity UHF set, handheld micro-transmitter |
| System | synthesized PLL |
| Frequency stability | < +30 ppm |
| Image interferes rate | > 80 dB |
| S/N ratio | > 90 dB |
| Sensitivity | -17 dBuV |
| Total harmonic distortion | < 0.5% |
| Frequency response | 40 Hz – 15,000 Hz (±3 dB) |
| Output impedance | 600 ohm |
| Audio output level |
400 mV, symmetrical / asymmetrical |
| Display | LCD |
| Audio output sockets | XLR symmetrical, jack asymmetrical |
| Antenna socket | 2 x BNC |
| Power supply | 13.5 VDC |
| Consumption | <4 W |
| Dimensions (L x P x H) | 210 x 215 x 45 mm (1/2 rack 19") |
| Weight (receiver + handheld microphone) | 1.4 kg |
| Transmitter box + lavalier microphone | JS-WM18B |
Segon Professional Audio
JS-WM18B - UHF bodypack microphone + lavalier microphone compatible JS-WM18, 30 mW
Segon Professional Audio
JS-WM18D - Double channel diversity UHF set, two handheld microphones, 30 mW
