Wireless Intercom Doorbell: This doorbell supports talk between inner and external bell. Step 1: visitors have to press the outdoor bell button first, then the receiver will get ringed. Step 2: Pressing the receiver button and talk. Step 3: Releasing receiver button, and after that, outside button will get voice. Step 4: Visitors can talk again by repeating that.
Ultra-long Transmission: Effective transmission distance up to 600 feet in open air, You can hear each other clearly within 150 feet between two walls. Quite enough for family or office use.
Safe Environment friendly: The product frequency is in line with state regulation which will not produce harmful electromagnetic interference. It has global CE FCC ROSH certifications also. Raw material primary ABS resin is wear-resistant, scratch proof and environment friendly.
Easy to Install: The doorbell can be fixed on the wall with high quality adhesive sticker which is unable to remove doorbell by hands once sticked.(included). You can place it in the bedroom, kitchen, living room, study room, everywhere you want. Devices are applied to home, apartments, hotels, supermarkets, and office.
Low Power Consumption: Outdoor bell is powered by 4pcs alkaline battery, work for more than 4 month. Indoor one is rechargeable Li-ion battery with 48 hours standby. We recommended to keep the indoor bell charging.