Wireless Intercom Doorbells for Home Classroom, Wireless Doorbell for Home Portable Intercomunicador Electronic Doorbell Chime with Crystal Clear Sound

About this item

【SIMPLE TO USE BUT POWERFUL】: Secure this outdoor doorbell chime to your door or wall with the included Screwdriver for ultimate security. The wireless intercom doorbell is expandable, so you can extend nearly any indoor or outdoor system.
【ANTI-INTERFERENCE & HEALTHY】: The frequency of use of this product is in accordance with national regulations and will not cause harmful electromagnetic interference, which is universal worldwide.This doorbell doubles as an FM wireless intercom doorbell that won’t be affected by WiFi disruptions!
【EASY TO USE】: Outdoor-bell is power supplied by 4pcs AAA battery (not included), easy to replace the battery. Indoor-bell is used with an external USB data cable. Low power consumption, long standby time for outdoor-bell up to six months.
【WIRELESS VOICE DOORBELL】: Big and adjustable speaker, clear voice, can be used as mobile interphone.Talk with visitor via two-way voice intercom,know who visit your home, much safe and convenient than the normal doorbell, especial for the elderly at home alone.
【FOR HOME AND OFFICE】: Long working distance, the maximum open distance can reach 300m / 984.3ft. Wireless intercom doorbell for home and office.