audio indoor monitor

Talk with door stationDoor release plastic1 to 1 direct AC powerSingle house door phone applicable to conveniently identify a visitor150 meters effective wiring with 0.8 mm cooper wireCall sound output power is high 300mW across 8 ohms, and low 50mW across 80 ohms

Dimension:   Door station: 12.8 x 10 x 4cm   Room station: 23 x 8.8 x 7cmWeight: 1.2kgWiring: 2 wire from room unit to door unit, 2 wire from room unit to door release unitVoltage: 230V AC, 50 to 60Hz, AC power from room unitPackaging dimension: 16 x 13 x 24.5cm 

audio indoor monitor