CallToU Window Speaker Intercom System Glass Window,Intercom System for Business call button It comes with a lanyard

It comes with a lanyard

Internal and external volume can be adjusted separately

making it easy to operate

so there is no need to worry about not receiving SOS alert

which can be connected to a recording device

CallToU Window Speaker Intercom System Glass Window,Intercom System for Business call button It comes with a lanyardProduct Description The window dual way intercom speaker system is suitable for any place where window conversation is difficult or noisy. It adopts advanced language processing chip plus unique design and strict quality management. It has the characteristics of clear sound quality, controllable volume, anti interference and anti howling. Ideal for the bank, hospital, securities, bus station etc. where guard glass again theft is installed. It is easy