2 Way Voice Intercom Wireless Intercomunicador Audio Voice Sender and Reciever Waterproof Intercom Doorbell System for Home

High-concerned chemical : None Communication method : Other Brand Name : alloet Origin : Mainland China Origin : Mainland China Power supply mode : rechargeable lithium battery Battery capacity : 2000mAh Working temperature : -20 degrees - 55 degrees Working frequency : B frequency 462MHz A frequency 434MHz Charging time : about 5 hours Music ringtones : 38 ringtones Ringtone volume : 3 levels of adjustment (volume key in standby mode) Outdoor unit : 116*61.6*18mm Indoor unit : 116*56*18mm/4.57x2.2x0.71inch Feature 1 : Intercoms Wireless for Home Voice Feature 2 : Wireless Voice Interphone Elderly Caller Feature 3 : 2 Way Voice Intercom Feature 4 : Wireless Intercomunicador Audio Voice Feature 5 : Voice Sender & Reciever System Feature 6 : Waterproof Intercom Doorbell System