1. AC 110-130V/220-240V.2.Pin shape: Flat with two outlets (China style); Round with two outlets(French Style).3. Two melodies for selection: Ding dong + To Alice4. Materials: PC, fireproof.5. Measurement:1) Receiver: 9.9*5.3*2.5 cm2) Transmitter: 8.2*4.3*1.1 cm6. Distance: 100 meters in the open air.7. Kind of package: Single blister.8.Color: White
