Wireless Voice Intercom Doorbell, 2 Way Door Bells Chimes, Smart HomeImprovement Security Electronic Home Access Control System(Silver)

【Global Scope】The frequency of use of this product complies with national regulations, does not produce harmful electromagnetic interference, and is universal. 【Large and Clear Sound】 The loudspeaker of Two-Way Voice intercom Doorbell has a loud voice and clear voice, with adjustable volume. The Wireless Voice Intercom Doorbells can change the ringtone, the intercom sound quality is clear, and it can be used for mobile intercom. 【Low Power Consumption】- Long standby time for outdoor-bell up to six months.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. 【Long Working Distance】 The maximum open distance of Home Doorbell can reach 300m / 984.3ft. Easy to install, directly stick to the wall with glue 【Dear customers】 - we are committed to providing you with the best service. If there are any problems with our products, you are welcome to contact our customer service to solve your problems.It is our pleasure to serve you! !, Manufacturer: Hopcd