Burglar Alarms & Security Systems

2 Way Voice Intercom Super Long Range Wireless Intercom Doorbell System Unit with Intercomunicador, Waterproof, 1000m Range for Home, Office, Laboratory [Intercomunicador Function] - Two-way talk without shouting [Long Battery Life] - Built-in large capacity battery [Long Range] - Transmission distance up to 1000m [Indicator Light] - Clear status at a glance [2 pcs Doorbell Units] - Switch between... 2 Way Voice Intercom Super Long Range Wireless Intercom Doorbell System Unit with Intercomunicador, Waterproof, 1000m Range for Home, Office, Laboratory