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【Multi-use for one machine】 Built-in double high-power speaker
When the wirless call button is pressed
Can the volume of the alarm be adjusted
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 【Multi-use for one machine】 Built-inProduct 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
US$ 45.00
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US$ 14.22
US$ 10.07
US$ 38.95
