Tosuny Wireless Voice 2Way Intercom Doorbell with Builtin Speaker, Home Security Access Control System with 6 Months Long Standby time, Door Chime

【Wireless Intercom Doorbell】- 1 outdoor-bell can paired with 1 indoor-bells, the perfect combination allows you to communicate with visitors outside the door.
【Dual-Way Intercom】- When someone press the call button on outdoor unit, the indoor bell will ring immediately for reminding you. You can press the response button to talk with the people outside.
【Clear Voice】- Built-in high sensitivity microphone and speaker, 2.4GHz signal ensure clear and smooth sound effect in communication.The effective transmission distance can be up to 200 meters
【6 Months Standby Time】- The doorbell is powered by 4 alkaline batteries.Low doorbell power consumption, long standby time, outdoor clock standby time of up to 6 months, greatly saving you energy.
【Easy to Use】- Ultra mini size ensure perfect portability and easy installation, small and nice, easy to install.Apply to house, factory, hotel, hospital, super market and office. [Note] Attention! Product transmission distance: 200 meters in the open space; 5-50 meters in the presence of obstacles

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