L2H Battery Doorbell Smart Appliances Audio: Full duplex two-way audio

Audio: Full duplex two-way audio

This ESP Optical Smoke Detector C/W Diode Base features a max operating voltage of 30VDC

RF Frequency 868

499Mhz RadioLINK

L2H Battery Doorbell Smart Appliances Audio: Full duplex two-way audioDescription The BellBattery camera doorbell is a truly innovative way to answer your door. It's perfect for those who want the convenience of being able to see and talk with visitors from anywhere. The product features a full duplex two way audio, allowing you to hear and converse with your visitor from the comfort of your phone or smart device. Specifications: Intelligence: Supports sound and motion detection Working temperature: 20C to 50C Optional