... 3.stable quality Product name: High pixel 3.5" wireless Video Door Phone made in China simply features:1,Wireless ... phone,3.5 inch display screen,touch button2,Video intercom,unlocking,monitor functions3,Intercome between inner monitors4,Infared ... card7,autumatic recording function, photo functionsand details(1) 2.4GHz digital frequency hopping and encryption technology, (2) Hands-free intercom,clear ...