| Speaker | < 2 Vpp; Impedance: 600 Ω; 1-ch built-in speaker |
| MIC | < 1.2 Vpp; Impedance: 1000 Ω; 1-ch built-in MIC; Connectable to external interface. Supports auto switch |
| Working Voltage | 12 VDC/30 mA |
| Working Temperature | -10° C to +55° C (+14° F to +131° F) |
| Working Humidity | 10% to 95% |
| Dimensions | 85 × 85 × 26 mm (3.3 × 3.3 × 1.0 inch) |
| Indicator | Solid lit or flashing |
| Wiring Length | 6000 mm |
| Volume | Physical button. 5 levels adjustable. |