Crony 4-Way Intercom Audio Doorphone Loudly Clear Voice Doorbell Kit Easy to Install -RL-0004

  Warranty:3 Months

■ Multi-user intercom 4-way kit. Build-in microcomputer-controlled circuit and coding and decoding digital circuit. Only 4 cables for connecting all the units with stable performance and anti-interference function.

■ Intercommunication is available between indoor phones with privacy kept.

■ Busy line reminding and ring-off indicating

■ Centralized power supply.

■ Clear voice.

■ Maximum talking distance: 300m.

■ 4-wire connection.

■ Enclosed an adapter.

■ Four interphones     ■ One transformer 

■ Four brackets           ■ Screws