Calltou Window Speaker Intercom System – Dual-Way Anti-Interference Microphone & Speaker for Bank, Office, Business, Hospital Color:1 PACK equipment in your home or

equipment in your home or those of your neighbors

A receiver that immediately knows the exact location is the perfect protector for gravida

If you're in healthcare

This means you can communicate freely without worrying about connectivity issues or additional charges

Press the volume control and hold it until hear a sound "ding-dong"

Calltou Window Speaker Intercom System – Dual-Way Anti-Interference Microphone & Speaker for Bank, Office, Business, Hospital Color:1 PACK equipment in your home orProduct Description Voice Communication Dual way intercommunicationThe Window speaker intercom system adopts auto dual way intercommunication technology,automatic indentification of processing speech signals during a call dose not require any action Knob Voice AdjustmentBank window intercom system has the ability to adjust the volume on the both sides; And knob design can be more convenient to operate; Less static noise or hollow sounding High